IBM LPCI-COM232-4 manual

10623 Roselle Street, San Diego, CA 92 121 • (858) 550-9559 • FAX (858) 550-7322 contactus@accesi o.com • www.accesio.com MODEL LPCI-COM-8SM LPCI-COM-4SM LPCI-COM232-8 LPCI-COM232-4 USER MANUAL FILE: MLPCI-COM-8SM.B1f[...]

Manual LPCI-COM-8SM 2[...]

Notice The information in this document is provided for reference only. ACCES does n ot assume any liability arising out of the application or use of the informat ion or products d escribed herein. This docu ment may contain or reference information and p roducts protec ted by copyrig hts or patents and does not convey any license under the patent [...]

Warranty Prior to shipment, ACCES equipment is thoroughly insp ected and tested to applicable sp ecifications. However, should equipment failure occu r, ACCES assu res its customers that prompt service a nd support will be available. All equipment originally manufactu red by ACCES which is found to be defective will be repaired or replaced subjec t[...]

Table of Contents Chapter 1: Introduction ................................................................................................. 6 Specifications ............................................................................................................ 8 Figure 1-1: Block Diagram (Only one serial channel shown) ........................[...]

Chapter 1: Introduction This serial interface card was designed for effective m ultipoint transmission in any one of three modes o n each channel. These mo des are RS232, RS422 and RS485 (EIA48 5) protocol. The RS485 mode may be run in three manne rs. It ma y be run as a standard RTS controlled channel, an “Auto RTS (referred to by some as Auto R[...]

Communication Mode The card supports Half-Du plex communications with a 2-wire cable conne ction. Half-Duplex allows traffic to travel in both directions, but only one way at a time. RS485 com munications commonly use the Half- Duplex mode since they share only a sin gle pair of wires. Baud Rate Ranges The card has capability for two bau d rate ran[...]

Specifications Communications Interface • I/O Connection: 68 Pin HVDCI SCSI style -Connector • Serial Ports: Eight cable terminated shielded male D-sub 9-pin connectors with standard I BM AT connectors compatible with RS485 specifications • Character length: 5, 6, 7, or 8 bits. • Parity: Even, odd or none. • Stop Interval: 1, 1.5, or 2 bi[...]

PCI BU S VH DCI 6 8 PI N C ON NEC T O R WITH AU T O-R T S CIRCUI TRY Figure 1-1: Block Diagram (Only one serial channel shown) Manual LPCI-COM-8SM 9[...]

Chapter 2: Installation A printed Quick-Start Guide (QSG) is pa cked with the card for your convenience. If you’ve already performed the steps from the QSG, you may find this chapter to be redundant and may skip forward to begin developing your application. The software provided with this card is on CD and mu st be installed onto your hard disk p[...]

Hardware Installation 1. Make sure to set switches and jump ers from eith er the Option Selection section of this manual or from the suggestions of SETUP.EXE. 2. Do not install card into the computer until the software has been fully installed. 3. Turn OFF computer power AND unplug AC power from the system. 4. Remove the computer cover. 5. Carefull[...]

Chapter 3: Option Selection To help you locate the jumpers describ ed in this sect ion, refer to the Option Selection Map at t he end of this section. Operation of the serial communication s section is determined by jumper installat ion as described in the following p aragraphs. For the convenience of the user, instructions for the placement of the[...]

Data Cable Wiring RS-485 SignalPin Connection Ain/out+ 2 Ain/out- 3 100 Ω to Ground 5 Baud Rate Ranges The jumper labeled CLK X8 provides a mean s to select baud rates in a higher range. When a jumper is not placed on the out the CLK X8 position, the baud ra te range is up to 115,200 baud. When it is in the CLK X8 position, the baud rate range is[...]

6. 60" 2. 20" A B C D E F G BA UD x 8 H A B C D E F G H PO R T CO NFI G PO RT CO NFI G Figure 3-2: Option Selection Map The card has 8 separate channels which can b e individually configured. Each cha nnel can be used in: 1) RS485 (2 wire mode ) - This mode may use “Auto RTS” 2) RS422 3) RS232 4) RS485 (4 wire mode ) The jumpers on th[...]

Other jumpers: 1) RS 485 (2 wire mode ) - Two jumpers must be insta lled for each channel in thi s mode in order to connect the output and input lines. These jumpe rs are located near the cabl e connector and a re labeled with the channel letter and “485. ” 2) RS 485 (2 wire mode ) using “Auto RTS” - One jumper mu st be installed for each c[...]

Chapter 4: Address Selection The card uses one address space. CO M A, COM B, COM C, COM D, COM E, COM F, COM G and COM H each occupy eight consecutive regi ster locations. The interrupt register which indicates whi ch port or ports caused the interrupt is located at base address + 64. PCI architecture is Plug-and-Play. This mean s t hat the BIOS or[...]

Chapter 5: Programming Sample Programs There are sample program s provided with the card in C, Pascal, QuickBASIC, and several Windows languages. DOS samples are located in the DOS directory and Win dows samples are located in the WIN32 directory. Windows Programming The card installs into Wi ndows as COM ports. Th us the Windows standard API funct[...]

Address Map The core of the UART function is supplied by the EXAR XR16L788 chip. This chip is 16550 and 167 50 compatible, but has extra features that require communicating with an additional 8 registers per channel. Fo r instance, it is necessary to set the “Auto RTS” function. (EXAR refers to this function as “Auto RS485" in their lite[...]

Chapter 6: Connector Pin Assignments Input/Output Connections The card’s Serial Communications card use s eight individual 9-pin connectors, provided via a spider cable from a 68-pin HV DCI D-connector. To ensure that there is minimum susceptibility to EMI and minimum radiation, it is important that the card mounting bracket be properly screwed i[...]

Appendix A: Application Considerations Introduction Working with RS422 and RS485 devices is not much di fferent from working with standard RS232 se rial devices and these two standards overcome defici enc ies in the RS232 standard. First, the cable length between two RS232 devices must be short; less tha n 50 feet at 9600 baud. Second, many RS232 e[...]

Parameter Conditions Min. Max. Driver Output Voltage (unloaded) 4V 6V -4V -6V Driver Output Voltage (loaded) LD and LDGND 2V jumpers in -2V Driver Output Resistan ce 50 Ω Driver Output Short-Circui t Current +150 mA Driver Output Rise Time 10% unit interval Receiver Sensitivity +200 mV Receiver Common Mode Voltage Ra nge +7V Receiver Inpu t Resis[...]

RS485 Data Transmission The RS485 Standard allows a balanced transmissio n line to be shared in a party-line mode. As many as 32 driver/receiver pairs can share a two- wire party line network. Many characte ristics of the drivers and receivers are the same as in t he RS422 Standard. One difference is that the common mod e voltage limit is extended [...]

Appendix B: HVDCI D-Connector Pinout Reference Connections will normally be made to the 9-pin con necto rs through the breakout cable. In case you wish to connect directly to the 68-pin connec tor, the pins translate as follows. DB-9 Pin Ch A pins on 68-pin Ch B Pins on 68-Pin Ch C Pins on 68-Pin Ch D Pins on 68-Pin Ch E Pins on 68-Pin Ch F Pins on[...]

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