GE 90-70 manual

GE Fanuc Automation Progr ammable Contr o l Product s Series 90 ™-7 0 Enhanced Hot Standby CPU Redundan cy User's Gui de GFK-1527A May 2000[...]

GFL -002 War nings , Ca uti ons, a nd N ote s as Used in this Pu blicat io n Warning Warning n o tices ar e u sed in th is pu blicatio n to em phas ize th at ha zardo u s voltages , cu rrents, temp eratu res, or o ther co nd ition s that co uld cau se p erso nal in ju ry ex ist in this equipment or may be a ssoci a ted with its use. In si tu atio n[...]

Preface GF K-1527A iii T his m anua l is a ref erenc e to t he ha r dw are c o mpone nts , co nfigu rat io n and o peratio n of Enh a nce d Ho t Standby CPU Re dundancy for th e S eries 90-70 P rogrammable Lo gic Cont roller. Th is revisio n adds i n fo rm ati o n abo u t n ew redu ndancy CPUs IC697CGR772 and IC697 CGR935, as w ell as n ew f e atur[...]

Prefac e iv Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de–May 2000 GF K-1527A Logicmaster 90-70 Program ming Soft ware User's Manual (GFK-0263) . A p rog ramming so ftware user's m an ual fo r sy stem o per a to r s and o the r s using th e Lo gi cmaster 90-70 sof t w ar e to p r og ram, co n figur e, [...]

Cont ents GF K-1527A v Chapter 1 I ntr oduc tion..................................................................................................... 1-1 En h ance d Hot St an dby CPU Re d u nd ancy ..................................................................... 1 - 2 Fe ature s o f Enh ance d Ho t Stan d b y CPU Red und a ncy ...............[...]

Conten ts vi Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de–May 2000 GF K-1527A Po rt 2.................................................................................................................... 2-5 Po rt 3...................................................................................................[...]

Conten ts GF K-1527A Contents vii Fail Wai t Ti me ...................................................................................................... 4-8 Pro gram min g a Dat a Tran sf er f r om Back up Un i t to A ctive Un i t.................................. 4-1 0 Data Tr a nsf er Ex amp le ...................................................[...]

Conten ts viii Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de–May 2000 GF K-1527A Faul t A c ti on s in a CPU Re d und ancy Sy stem ................................................................. 5- 7 Co nfigu rab le Fau lts........................................................................................[...]

GF K-1527A 1- 1 Intr oduction This c hapte r int roduce s th e met h od o f CPU Redun dan cy for the Se r ies 90 -70 P rog rammable L ogic Controlle r , w h ich is refe r r ed to a s E nhanced H ot Sta n dby CPU Re dundan cy . Th e c o nt ents of thi s chapter de sc ribe : Enhanced H ot Standby CP U R edundan cy Compo n ents of th e E nhan ced H ot[...]

1-2 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 1 Enha nce d Hot Sta ndby CPU Redunda ncy CP U Redu ndanc y allo ws a crit ical ap plic a tio n o r pro c es s to c o n tinue o perati ng if a f ailure o cc urs i n an y sin g l e comp on en t. An Enh an ced Hot St an dby CP U Redu n dan cy [...]

GF K-1527A Chapter 1 Introduc t ion 1-3 1 Fea t ure s of E nhanc ed Hot St andby C PU Redunda ncy B umple ss s w itching Synchronize d CPU s 4.7 ms (CGR 935), 5.9 ms (CG R 772) b ase s wee p time in R un mo de On e scan switch ing (in most ca ses) Configu r a ble b a ckup d ata size No sing le po int o f f ailure (e xclud i ng G eniu s I/O b lo ck [...]

1-4 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 1 Re dundanc y C PUs a s Compar ed t o Othe r Serie s 9 0-7 0 CPUs The R edunda ncy CPU has s ev eral dif ference s in ope ratio n compa r ed to o t her Serie s 90-70 CP U s. Featur es not Av ailab le with R edun danc y CPU s The f ollow ing[...]

GF K-1527A Chapter 1 Introduc t ion 1-5 1 Compo nents of the Enhance d Hot S t andby Re dundanc y Sys tem Enhan ced R edunda nc y CP U Mo dul e To utili ze t he fe atures des crib ed in this m an ual, an E nhance d Re dun dancy CPU M odule (IC697CGR 935 o r IC697CGR 772) mus t be instal led rack 0 , slot 1 of b oth th e P rima ry and Sec on d ar y [...]

1-6 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 1 Genius I/O The redunda nt portio n o f t h e sy stem is b ased o n Ge ni us I/O . A sy stem using sta ndard Se ri es 90-70 racks c an hav e mu l t iple Ge n ius I/O bus netwo r ks. A sy stem using t he ½ slo t r edundant ra cks may ha ve [...]

GF K-1527A Chapter 1 Introduc t ion 1-7 1 Enhan ced H ot Stan dby CP U Red undanc y S ystem with Lo cal I /O T he f ollow ing il lust ratio n is an e xample of an E nha n ce d H ot S tandby CPU Re dundanc y sy ste m w ith Lo cal I/O i n standard Se ri es 90-7 0 expa nsio n racks. C P U B T M R C M G B C 30 Se cond ary Un i t Pr imar y Uni t 31 P S [...]

1-8 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 1 Cont rol St rategi es There a r e tw o diffe r en t Control St rategies f or Enhanced H ot Standby CP U R edundancy : GHS and GDB. GHS Cont ro l Strat egy T he G H S c o ntro l st ra te gy has t he f o llo w ing f ea tu res : Multiple si n[...]

GF K-1527A Chapter 1 Introduc t ion 1-9 1 Ba sic E nhanc ed Hot Sta ndby Operat ion In an Enhanced H ot Standby CPU Redundant sy stem, Genius I / O Blo cks a r e norma lly co n figured fo r Ho t Sta n dby op e ratio n . G eniu s I /O B loc ks c an a lso b e co nfig ured f o r the les s f r equ e ntly use d Du ple x o pera tio n, b ut on ly w ith t [...]

1-10 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 1 Ba sic CP U Re dundancy Se t ups Th er e are thr ee ba s i c C PU Redu n dan cy set u p s : Si n g l e Bu s wi th Pr eferr ed M a ster Single B us w ith Flo ating M aster Dual Bus with Fl oatin g Mast er Sin gl e B us w ith Pr ef err ed M[...]

GF K-1527A Chapter 1 Introduc t ion 1-11 1 Single B us with Flo ating Ma ster: G DB Co ntrol S tr ategy T his ty pe of sys tem als o us e s a si ng le b us w ith b us co ntro lle rs i n e ac h PL C . H owev er, no sw itcho ver o c c urs o n in iti al s y n chro niz at io n to make the P rima r y U nit t he activ e u n it. C P U C P U B T M R C M G [...]

1-12 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 1 Dual Bus with Flo ating Master: GDB Contr ol Strategy Thi s ty pe of system u ses du a l buses w it h bus con tr oll ers in each PLC. No sw i t ch ove r occur s on ini tial synchr onizat i on t o make the Primary Uni t th e Active U n it.[...]

GF K-1527A Chapter 1 Introduc t ion 1-13 1 Duplex CP U R ed und ancy On ly dis c rete blo cks ( or R emo te I/O Sc anne rs w ith o nly disc r ete mo dules ) ca n b e co n figur ed fo r Duplex CPU Re dun dancy mode . Bloc ks o r I/ O Sca nners co n figur ed f or Dup l ex mode r ecei ve out p u t s fr om BOTH bus c on tr oll er s 3 0 and 3 1 , an d c[...]

GF K-1527A 2- 1 System C omponents This c hapte r desc r i bes the h ardw ar e co mpone n t s f or an E nha nced H ot Standby CP U R edundancy sy ste m. S ystem Ra ck s Re dun dan cy CP U Re dun dan cy Communicatio ns Module B us Tra nsm it ter Mo dule Bus Rece ive r Module G e niu s B us Co nt rol le r For Inst al lati on I nstr u ct ion s For det[...]

2-2 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 2 Re dundancy C PU T he red u n da n cy CPU s hav e b ee n des igne d s pe cif ically fo r Se ries 90 -70 H o t Standb y CP U R e dunda ncy applicat ions . Feat u r es The Enha n ced H ot Standby CPU s uppo r ts flo ating poi nt calcula tion[...]

GF K-1527A Chapter 2 S yste m Com pone nts 2-3 2 CPU Archit ectu re The CGR 772 and CG R935 have a n 80486DX4 microp roce sso r , on-board memo r y , and a dedica ted VLS I p r oce s s or for p er for m i n g Bool ea n op er a t i ons . Th e CG R 772 and CGR 935 interfac e to se rial po r ts a n d t h e sy ste m b us. T he mic ropro ce sso r pro v [...]

2-4 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 2 CPU Featu res Mem ory Protec t Keys w itc h T he Me mory Prote ct key s w itch c a n b e us ed to ma nually lock p r ogr am an d con fi g ur at i on da ta fr om access b y a remo te p r og r amme r (s e ria l o r Et h er net) . W hen t h e[...]

GF K-1527A Chapter 2 S yste m Com pone nts 2-5 2 CPU M o de S w itc h Th e C PU Mode s wit ch s el ect s th e oper at in g mod e o f th e CPU: RUN /ENA BLED, RU N/DIS ABL ED , or STOP . The CPU mo de c a n also b e controlled f rom t he p r ogramme r . How eve r , the CPU Mode sw itch po sitio n res tric ts the ab ili ty of th e p ro g ram mer to p[...]

2-6 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 2 Re dundancy C ommuni ca t i ons Mod ule The R edunda ncy Communic atio ns Mo dule (R CM), c atalo g numb er IC697R CM711 or IC687RCM 711 ( ½ slo t versio n ), prov ides a co m m unicatio n s path f or sha rin g d ata b etw een th e tw o C[...]

GF K-1527A Chapter 2 S yste m Com pone nts 2-7 2 LEDs Unit Select Pushbutton C onnec tor for Communications Ca ble BOA RD O K LOCA L SYSTE M RE ADY LOCA L SYSTE M ACTI V E REM O T E SY ST EM RE AD Y REM O T E SY ST EM ACT IV E Conn ector The top c onnecto r on t h e Re dundan cy Communications Mo dul e mu st be con n ected vi a an I/ O cabl e t o t[...]

2-8 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 2 LEDs Conne ct o r f or Pr ogr am mer Conne ct o r f or Redu ndanc y Co mmu n i ca t i o n s or Bu s Re ce i v er Mod u l e MODULE OK PR OG R A M M ER P ORT EN A BL E D E XP ANS I ON P ORT E NAB LE D (Pr og ram me r P o rt ) ( Exp an si on [...]

GF K-1527A Chapter 2 S yste m Com pone nts 2-9 2 Bus Receiver Module The B us R eceiver Module (B RM), cat alog num ber IC697B EM711, is the exp ansion rack inte r face to th e I/ O bus. Th e Bus Recei v er Modu l e conn ect s t o a Bus Tr an smi tt er M odu l e in ra ck 0 or t o a Bus R ec ei ver Modu l e in the pr evi ou s r a ck vi a a par al l [...]

2-10 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 2 Geni us Bus C ontrol le r The Ge nius B us Co n troller (IC697B EM731) in t e r face s t he Series 90-70 PLC to a Ge n ius I /O b us. Th e bus con tr oll er s can s b us d evi ce s a s yn ch r o n ous l y and ex ch an g es I / O dat a wi [...]

GF K-1527A Chapter 2 S yste m Com pone nts 2-11 2 Single B us Ge niu s Networ ks Whe n using s in gl e-bus Ge nius netw orks i n a H ot Sta ndby CPU Redundancy s yste m, one Ge n ius Bus C on tr oll er for th e bu s m u s t be l oca t ed in th e Pri mar y PLC an d on e in th e S econ d ar y PLC. Ther e can be multipl e Geni u s busses in th e sy st[...]

2-12 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 2 30. Data fr om Seria l Bus Address 31 in th e P r imar y PLC is the "preferr ed" data. The GDB contr ol str ateg y mus t b e us e d a nd all r edu nda nt Ge nius o utputs mus t be transf erre d f r om the ac tiv e to t he bac ku[...]

GF K-1527A 3- 1 Conf igur ati on Requi rement s T his c hapte r de fines the s pe cia l co nfigu rat io n req ui r eme n ts o f an E nhanc e d H o t Sta n dby CPU Re dun dan cy s ystem. Progra m mer Conne ct ion f or Conf igurat ion In a H ot Standby CP U Redunda n c y sy stem, one CPU i s co nfigured a s t he Primary CPU and t he oth er a s th e S[...]

3-2 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 3 Pr ogr am F o ld er s i n Lo g ic ma st er 9 0 With the Log i cm a s t er pr ogr a mm in g s oft war e, th ere mu s t be di ff er ent fold er s for ea ch con fi g u r ati on . I f th e l ogi c i s id en t i cal for both PLC s , a th ir d f[...]

GF K-1527A Chapter 3 Co nfiguration R equ ir eme nt s 3-3 3 Config uring Sh ar ed I/O R efer ence s Shared I/O data is tra nsfe rr ed f r om the active CPU to the b ackup CPU each sw ee p. Re ference ad dr ess es an d ran g es mu s t be con fi g u r ed for th e da ta to be tr ans fer r ed. Th er e can be up t o 2 0 Kby t es of input data (%I, %AI) [...]

3-4 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 3 Findin g th e Memor y Ava ilabl e for Appl ication P rogr am S tor age Sh are d I/O dat a is s tored in t he same memo ry as appl icat ion p rogr a m sto r age. To find t he a mo unt of memo r y availab le f or ap pl icatio n p r ogr am(s [...]

GF K-1527A Chapter 3 Co nfiguration R equ ir eme nt s 3-5 3 Conf iguring t he Re dunda ncy C PU f or Non-re dundant Ope r at ion The R edunda ncy CP U c an be us ed f or bo th redunda nt and n on-red undant applica t i ons. Fo r non- redunda nt appl icatio ns, do n ot co nfigure R edundancy Communicatio n s Mo dules in the sy stem. If a B us Tra n [...]

3-6 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 3 Genius I/O Bl oc k Confi gurat ion Parame te rs Whe n using the GH S Control St rategy , if a Ge n i us B us Controlle r is set to redunda nt, the n all of its I /O b lo c ks mus t als o b e s e t to redu nda n t. Whe n using the GDB Cont [...]

GF K-1527A 4- 1 Nor mal Oper ation Thi s chapt er discusses: Powe rup of a Re du ndant CPU Res yn c h r on iz a t i on of th e Red u n da n t C P U GHS Co n t r ol Str ategy GDB Contr ol Stra t egy %S R efe r en ces f or CPU R edundan cy Sc an Sy n chro n iza tio n Sw i tch in g Co ntrol to the B ackup u nit RUN Disabled Mode Ba c k g r ou n d Us e[...]

4-2 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 Powerup of a R edundant CP U Whe n a redu ndant CPU is po wered up, i t perfo rm s a co mpl ete hardware diag n ostic chec k and a co mple te c hec k o f the ap pl icatio n p r og ram and c onf igu ratio n pa ramete rs. T his c ause s t h [...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-3 4 Inco mpatib le Con figu rations Whe n tw o u nits have inco mpa tib le c o nfig u r atio n s s tored (f or ex am ple , b o th units c o nfig u r ed f o r PR IMARY o r diffe r in g blo cks f or data t ransfe r ), then o n l y one o f th e units can go to R UN mode . If th e o the r uni t at te mpts to [...]

4-4 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 FST _ E XE r efer en ces for pr og r a m bl ocks wit h the s am e na m e ar e tr an sferr ed fr om th e act i ve t o th e bac kup CPU . T h e r esult is that if o n e CPU i s already in Run mo de an d the o th er is t ran sitio n in g to R[...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-5 4 por t i on of t h e bu s be t w ee n th e BS M a n d t h e bl ock s ) r e s u l t in los s of t h e bl ock s d o wn s tr e a m fr om t he f ailure on t hat bus stub . B us f ailures in s i ngle bu s n etw orks res ul t i n lo ss o f the b loc ks dow n strea m f r om the b us f ailu re. Wh en u s in g [...]

4-6 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 Sca n Synchroni za tio n Th e fi g ur e bel o w sh ows th e sweep c om p on en t s for th e act i ve an d th e back u p C PUs. 1 ACTIVE CPU Ho usek ee p in g In p ut Sca n Send In p uts an d S y nchr on iz e Lo g ic S olution Send Out p ut[...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-7 4 The St art o f Sweep Ti me mes sage tr an sfe r repeatedly coo rdi na tes t h e elaps ed time clo cks (upon w h ich t ime rs are b ased ) i n the red u nda n t CP Us . T he s y ste m time is c ont i nuou s as lo ng as o n e o f t he tw o sy stems is ru nning. W he n a s witc h ov er o ccu rs, t he sam[...]

4-8 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 Data Tran sfer T ime Whe n a sy ste m is sy n chro nized, the r e a re a ddi tions to t h e sw ee p ti me (c o mpared to a sim ila r no n- redu nda n t CP U mo de l) f or sy n chro niz atio n act ivitie s an d f or tr a nsf erri n g da ta [...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-9 4 Th e con fi g ur ed Fai l Wa it tim e for th e system m u s t be bas ed on th e maxim um ex p ect ed or allo w able diff erence in t h e tw o C PU s reac hing a sy nchro nizat ion p o int. Fo r exa mple , if o n e CP U mig ht s pe nd 2 0 ms in the c o mmunic atio n s p has e o f th e s w ee p a n d t [...]

4-10 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 Prog rammin g a Data Tran sfer fro m Backu p Un it to Acti ve Unit Optionally , th e progra m lo gi c ca n be use d in bo th CPU s to transfe r eight by tes (4 registe r s) o f data fr om th e back u p un it to th e act i ve un it bef or [...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-11 4 Disablin g Data T ran sfer Cop y in Backup Un it (SV CREQ #4 3) Servic e Re ques t function b l ock #43 c an be used on t h e bac kup to a llow th e bac kup u nit to b y pa ss th e cop y of th e shar ed I/ O dat a fr om th e act i ve un it . Th i s fun cti on can be used t o hel p det er min e i f th[...]

4-12 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 A f ault is logg e d t h e f irst time SV CR EQ #43 is use d as a w arnin g that the PL Cs a r e not co mplete ly sy nchr onized. Th e r ever s e d a ta tr an sfer, if an y, i s un a ffect ed b y th is fun ct i on bl ock . E nabli ng lo g[...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-13 4 Examp le In the f ollow i n g examp le, w hen %M 0003 5 is o n, the input a nd o utput co pies are dis a bled. %M00035 %T00041 SVC_ REQ FNC PARM CONST 00043 %L00001 MOVE_ INT IN LEN 00001 CONST 00001 Q %L00002 MOVE_ INT IN LEN 00001 CONST 00000 Q %L00001 Back u p Qu al ifi cat i on w it h S VC RE Q #[...]

4-14 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 Swi tc hing Cont rol to t he B ack up Uni t Co n trol s witc h es f rom t h e act iv e unit to t h e b acku p u nit if : 1 . t he ac tiv e unit has a f ailure; 2 . the pus h butto n switch o n the R edun dan cy Communicatio ns Mo dul e is[...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-15 4 RUN Disabled Mod e RU N/D IS ABL ED mo de c ause s all phy sic al ou tputs to go to thei r de f ault s t ate i n t hat P L C. I npu ts ar e st il l scan n ed an d l ogi c i s solved . A C PU in RUN/ DI S A BLE D m ode may be the ac tive u nit . RUN D isabl ed M ode for GHS Co ntrol S trate gy Th er e[...]

4-16 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 Exampl e 2: R ole sw itche s allowe d on both unit s Th e Secon dar y un it dr i ves th e out p u t s in th i s ex am pl e. Primar y Unit Sec ondar y Uni t Role Ac tive Bac kup Ope rat i ng M ode RUN/DIS ABLED RUN /EN ABLED OK LED on RCM [...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-17 4 Exampl e 5: R ole s witche s allowed on both units S econdar y U nit Activ e No te: S econ d ar y un i t acti ve is n ot a recom m en ded m od e of op er a ti on wh en u s in g th e G HS Co ntro l S t rat e gy . Primar y Unit Sec ondar y Uni t Role Bac kup Act i ve Ope rat i ng M ode RUN/EN AB LED RU[...]

4-18 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 Exa mpl e 8: In v alid T he f ollow ing s ituat ion is not valid . I f de tec ted , t he u nits sw itch ro les auto matic ally and b eh av e as in E x ampl e 3 abo ve. Primar y Unit Sec ondar y Uni t Role Bac kup Act i ve Ope rat i ng M o[...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-19 4 Background U ser C h ecksum and Backgrou nd Win dow Timing I nst ruct ions Pe r for m in g Use r pr ogr am Ch e ck s u m ve r i fi ca ti on an d Ba ck gr ou n d Wi n d ow D i a gn ost i cs ad d s t i m e to th e sweep; t h e mor e ch eck s u m s an d dia gn ost i cs th a t ar e per for m ed ea ch swe[...]

4-20 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 Exampl e The exa m pl e b elow calculates W o r ds pe r Swe ep fo r a CGR 935. I t uses t he f ollow in g data: U ser Program S ize = 239000 Program Si z e = U ser Progra m Size + 11000 = 23900 0 + 11000 = 250000 b y tes Sw e ep Time = 1 [...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-21 4 Miscellaneo us Op eration Info rmatio n Timer and P ID Fu ncti on Blo cks T i m e r a n d P I D fu n ct i on bl ock s r ema in in lock s t ep be t we en t wo s yn ch r on iz ed un i t s pr ovi d ed : A. E nabli ng lo gic is id e ntica l o n bo th u nits . T his includ e s p o we r flow , f r equ e nc[...]

4-22 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 a s can s et th a t is s can n ed ever y oth er sweep (th a t i s, PERI OD = 2 ) , th en th e Pri mar y CPU mi gh t sca n i t s scan s et in on e s weep a n d th e S econ d ar y CPU sca n it s s can set in th e n ext. Use o f n on -d efa [...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-23 4 Geniu s Bus Co ntro ller Switchin g Ge n i u s Bu s C on tr ol l er s st op s e n din g ou t p u t s t o G e n i us I/ O bl ock s wh en n o ou t p ut dat a h a s bee n r ecei ved fr om th e PLC C P U for a p er i od eq u al to t wo time s th e co nfigu r ed watc h dog ti meo ut. If th e CP U in t h e[...]

4-24 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 4 Et herne t Gl obal Da ta in a Redundanc y CPU Ethernet G l ob al Data is e nhanced to provide o ptimal use w i t h Re dundancy CPUs. Co nfigurat ion of Et hernet G lob al Data requ ires t h e use of Control P r og ramming s of t ware, rel[...]

GF K-1527A Chapter 4 No r mal Ope r ation 4-25 4 Ethernet G lobal Data Prod uction Whe n the tw o units of a CPU Redundancy system are sy n chr onized, Eth ernet G l ob al Data exch an g es ar e pr od u ced on ly by th e a ct i ve un it . Thi s r ed u ces th e am oun t of t r a ffi c on th e Eth ern et n et wor k an d si m pl i fi es th e han dl in[...]

GF K-1527A 5- 1 Fault Detectio n This c hapte r desc r i bes how faults are h andled in a R edunda nc y sy stem. Co n figu r atio n of Fault Actio ns Faul t Detecti on Faul t Response Fau lt ing RC Ms , L o sing Li nks , a nd Te r mi nati ng C o mmu nicatio n s Fault Ac tio n s in a CPU R edunda ncy S ystem Onlin e Repair Conf igurat ion of Fault A[...]

5-2 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 5 2 . If an expa n sio n rack fails afte r a u nit b eco mes a s tand-a lone u nit, a diag nos tic f ault w ill b e lo gge d o n t h at u nit b ut t h e u nit w ill s tay in RU N mo de and c onti n ue to c ont rol the p roc e ss . 3 . If aft[...]

GF K-1527A Chapter 5 F ault De t ection 5-3 5 PLC Fault Table Messages f o r Redundancy T he f ollow ing tab le l ists mes sag e s, de sc ript ions , a n d c orrec tive acti o ns f or e rror c od e s as so c iate d w ith the redu ndan cy fault group. T h ese e rro r code s c an be v iewe d by selecting C trl-F o n the co r r espo nding redu ndan cy[...]

5-4 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 5 Erro r Code Mess age F au lt Des cript ion Co rrectiv e Act ion 9 Primary and S eco ndary Un it s are I nco m patib le Th e loca l uni t ca nn ot be pl a ce d in R UN mo de when i ts r edu ndancy config ur at ion is inc om patib le with th[...]

GF K-1527A Chapter 5 F ault De t ection 5-5 5 Faul t R espons e The Enha n ced H ot Standby CPU R edundan cy s ystem de tects a n d reports f a ilures o f all crit ical co mpo n ents so th at ap p r opr ia te c ont rol actio n s may be taken. A ll c o mpone nts tha t ac qui r e o r di str i but e I/ O da ta or th at ar e in volv ed in execu t i on [...]

5-6 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 5 Faul ti ng RCM s, Losi ng Links, an d Termina t in g Comm uni cat ions Th er e are di st in ct diff er en ces bet ween l osi n g a r ed un d an t com m un i ca ti on s l in k an d fau l tin g an RCM . Faulting th e Re dundan cy Co mm uni c[...]

GF K-1527A Chapter 5 F ault De t ection 5-7 5 The f ollow ing ac tio ns a re t ake n w he n a li nk has ti med o ut. 1. Li n k Ti m eout fa ul t i s log g ed in th e PLC Fa ul t Ta bl e. 2. Th e OK an d Local LE Ds on th e Redun d an cy Comm un i cat i on s Modu l e in th e R CM t o BTM li nk t hat f ailed co n tinu e to b e mai ntai ned (th at is [...]

5-8 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 5 Configur able F aults The t ab le b e low show s the c o nfig u rab le f aults a nd t h eir f ault ac tio n def aults . T h ere are t hree fault actio ns: F at al, Non -Fatal, and Conditionally F at al . Fata l alwa y s stops t h e PLC, No[...]

GF K-1527A Chapter 5 F ault De t ection 5-9 5 Non-Configur able F ault Gr oup The t ab le b e low show s the no n -co n figu r able faul ts and thei r fault act ion de fau lts. F ault Acti ons Fau lt G r o u p Tabl e Type Desc ripti on Not Sync hr onized Synchron i zed SYS_ B U S_ F AIL PLC Syst e m bu s fai lu r e. Fata l Fata l NO_USER_PRG PLC No[...]

5-10 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 5 On-L ine Rep air Wit h a H ot Sta ndby CPU R edundancy s yste m, most s y stem c ompo nent f ailu res c an b e r epaired by r ep la cin g th e fa il ed com p on en t wh i l e th e system i s on l in e. Th ese on lin e r ep air pr oced u r[...]

GF K-1527A Chapter 5 F ault De t ection 5-11 5 Mainta ini ng P arall el Bu s T er mi nat io n It is i mpo rta nt w hen do ing onl ine repa ir to mai ntai n pa ralle l bus te rmi natio n o n t he activ e u n it. This is th e reaso n a te rminated paral lel cab le (IC6 97CB L803, IC697 CBL 811 or IC697CB L826) i s used, a nd w hy the R edunda n cy C [...]

5-12 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 5 In th e u n li k el y even t th at a ra ck fa il ur e does oc cu r and i s cor r ect l y dia gn osed , th e ra ck can be r ep la ced wit h p ower r em oved fr om th e system . Wh en th e ra ck i s r ep l a ced an d p ower r est or ed to t[...]

GF K-1527A Chapter 5 F ault De t ection 5-13 5 Bus Tr an sm itt er Mo d ule A f ault in t he Bus Tra n sm itte r Mo dule is t r eate d j us t l ike a f aul t i n t h e R e du n dancy Co mmunic atio ns Mo dule . I t is o n ly fatal if t h e f ault pre v e nts c o mmunic atio n s to any e xpans ion ra ck s with in th e system . Failu r e o f the B us[...]

5-14 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A 5 Du al Bus Ne tworks Fo r dual bu s G e nius netw o rks, a si n gle trun k c able failu r e w ill res ult in t h e b loc ks do w n stre a m f rom t h e f ailu r e sw itchi ng to the o the r Ge nius bus . Si n ce b oth b uss es are att ac h[...]

GF K-1527A A- 1 Cab lin g In fo rma tion IC690CBL 714A Mu lti-d ro p Cable Purpose To i nt erco nn ect Se ries 90-7 0 Redunda nt PLCs in a mult i-drop s erial c ommu nicatio n s a rrangeme n t. Spec if icat io ns Co nnec to r A: DB 15F, 1 5- pin f emale c o nn ec to r wi th M3 l atchb loc ks Connec tors B and C : DB 15M, 15-p in rig ht a ngl e , ma[...]

A-2 Serie s 90 ™ -70 Enha nced Ho t Standb y CPU Re dund ancy U ser's G ui de – May 2000 GF K-1527A A Fig u re A -1 . M ul ti-D rop C ab le Co nnec tio n D iag ram Connector B Pin 1 Pin 1 Connector C Connector A M3 pan head screws (2). Screws must not protrude through the end of the Latching Blocks. M3 Latching Blocks (2)[...]

GF K-1527A Appe ndix A Cabl ing I nformat i on A-3 A Fi g ur e A - 2. Mult i - Dr op Ca bl e W ir i n g Di a gr am 5 7 10 11 12 13 6 8 14 15 6 8 14 15 5 7 10 11 12 13 9 7 10 11 12 13 6 8 14 15 9 N.C. 5 N.C. Connector B, 15-pi n mal e, to CPU SN P Port Connector A, 15-pi n Fema le, to other CPU or Adapter Connector C, 15-pi n mal e, to next CPU or f[...]

Index GF K-1527A I ndex- 1 % %S re f ere nc es OVR_PRE not av ailable wi th Re dundanc y CPUs, 1-4 A Ac tive un it define d, 1- 1 Appendix A I C690CBL714A Multi -d rop Cab l e, A -1 B Bac kground Wi n dow time, 4-1 9, 4-20 , 4-22 differen t f o r redund ancy CPUs, 1-4 Bac kup CPU va l i dat i ng t h e l ogi c s ol ut i on, 4 - 1 3 Bac kup U n i t d[...]

Inde x Index- 2 Series 9 0™-70 E nhance d Hot Standb y CPU Re dund ancy U ser's G ui de–May 2000 GF K-1527A E Enhanced H ot Standby CP U R edundan cy ba si c op e r at i on, 1 -9 CPU f eatures , 1- 3 CPU v er sion, 1-3 define d, 1- 2 required mo dules, 1- 2 Err or ch eck in g, 2 -3 Et he rnet c on t rolle r co n figuring c omm uni cations [...]

Inde x GF K-1527A I ndex Index- 3 spec ific atio ns, A - 1 wiring diagram , A- 3 Multiple I / O sca n sets, 4-21 N No n co n figu r able faul ts, 5 -9 N o n re du nd a nt o pe ra ti o n, 1 -3 co n figuring, 3- 5 O Online p rog ramming, 1-13 O n li ne re p ai r , 1 -1 3 descript i on, 5- 10 Output c o ntr ol, 1-9 Output d a ta transf er, 4-6 Outputs[...]

Inde x Index- 4 Series 9 0™-70 E nhance d Hot Standb y CPU Re dund ancy U ser's G ui de–May 2000 GF K-1527A Stop mo de, 2-5 Stop to Run mode transition, 4-22 differen t f o r redund ancy CPUs, 1-4 SVCREQ 26 r ol e s w i t ch f r om pr ogr a m, 4 -14 SVCREQ 27 Writ e to rev erse transf e r ar ea, 4-1 0 SVCREQ 28 Read from rever s e tran sfe[...]