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OWNER'S MANUAL H-SERIES MULTIPORT CONTROLLERS 525H 528H 529H 5218H BayTech publi cation #U140E043- 04.
Thank you for selecting a BayTech multi port controll er. The data provi ded in this Ow ner's M anual expl ains the var ious w ays you can oper ate your unit and configur e it to y our ow n computer system.
NOTE: The information contained in this document is subject to change w ithout notice. Copyr ight 1993 by Bay Technical Associates, Inc. IBM PC, IBM PC /AT, IBM PC/XT are pr oducts of International Business Machines Cor poration. All products or company names are tr ademarks of their respecti ve holders.
TA BLE OF CONTENTS 1 GENERAL INFORMATIO N ........................................................................ 1 2 SPECIFICATIONS ..................................................................................... 4 3 INSTALLATION ..............
5.5 DATA FLOW CONTROL ............................................................ 21 5.5.1 525H AND 529H ........................................................... 21 5.5.2 528H AND 5218H ......................................................... 23 6 CONFIGURATION .
The BayTech H-Ser ies multipor t controller s are flex ible, multi- function data acquisi tion and control uni ts that provi de cost effective data communications for applicati ons that requi re control of multipl e peripherals from a single host computer.
2 Mode 3 Single message from all ports - Same as Mode 2, except that a sing le message from all peripher al devi ces is sent to the host dev ice upon req uest. Mode 4 A ll messages from select ed port - Same as Mode 2, but with speci fic port selection.
Figure 1 below show s six appli cations, one for each mode of operation. Figure 1.
4 INTERFA CE: EIA- 232C (CC ITT V.24), -12v mark , +12v space. Optional EIA-422A ( Option 17) and curr ent loop (Option 12) . TRA NSMISSION: Asy nchronous. FA CTORY POWER-UP DEFA ULT CONFIGURA TIONS: Baud rate: 9600.
BUFFER SIZE: 525H/529H - 3.7K Rx /256 byte Tx per port standard; the 525H optional ly av ailable wi th 7.7K Rx/256 byte Tx per port. 528H/5218H - 256-by te Rx/256- byte Tx per por t. POWER: 525H - 115 VAC, 50/60 Hz , maximum .2A.; optional 230 VAC, 50/60 H z, maximum .
6 After opening the box , check the packing list that comes w ith your multiport to ensur e that you have receiv ed all components. At a minimum y ou should have receiv ed the unit, this manual and any applicable addendums, and a software utility diskette.
All standard model s requir e 115VAC, 50/60 Hz. power and come with a three-prong power cord. Do not attempt to operate the uni t with a two- prong socket or adapter. 230 VAC, 50/60 Hz . is optional. All H- models power -up when you depr ess the power swi tch on the back of the unit to "ON".
8 NOTE: Before you proceed w ith installation, make certain that the devic e connected to the host port is setup to hav e the same configuration as the mul tiport host port.
IMPORTA NT: Before you proceed w ith cabling , you must know whether the devic es you are connecti ng to your multipor t are DTE (Data Termi nal Equipment) or D CE (D ata Communication Equipment). The following devices are g enerally DTE: terminals, printers, and computer s like the IBM PC.
10 If you are interfacing a DCE device to a DTE dev ice, you must use a one-to-one strai ght cable as show n in Figure 2 . If you are interfacing a DCE dev ice to a DCE device, or a DTE device to a DTE devic e, you must use a crossed cable as show n in Figure 3 .
This section discusses user -programmable operati ons (see Section 5.1 ), operating in the diff erent modes (see Section 5.2 ), binar y mode (see Section 5.3 ), break conditi on (see Section 5.4 ), and data flow control (see Section 5.
12 This is a si ngle character that indicates a completed message to the multiport i n Modes of Operation 2, 3, 4 and 5.
NOTE: For illustration purposes, the f actory defau lt control character ( Control- T ) will be used in the following descriptions of the Modes of Operation. Section 5.
14 Mode of Operation 3 prov ides multiplexi ng to the host port of a singl e message from all per ipheral por ts. Single messag es f rom each peripheral port are sent to the host dev ice only w hen a request for messages command is r eceived.
Mode of Operation 6 prov ides time-divi sion multipl exing. In this mode, the multiport conti nuously scans al l peripheral ports to check for characters in the r eceive buffers.
16 To clear the recei ve buffer for a selected peripheral port, send the control character followed by ASCII capital R . All complete or partial messages in the buff e r of the selected peripheral port will be erased regardl e ss of the mode of operation.
For exampl e, suppose the host device is transmi tting and recei ving data from Port 1 and you w ish to switch to Por t 2. 1. Send Control- T to the multiport. 2. W ait two char acter times. 3. Read computer input buffer. 4. If there are no character s in the PC's input buff er, send ASCII 2 .
18 NOTE: The host device may select and transmit data to any peripheral port w hile simultaneousl y receivi n g all messages from all peripheral ports.
In Mode of Operation 5, a sing le message is sent to the host port from a selected peripher al port.
20 Binary mode allows all data r eceived by the host port to be passed through to the selected per ipheral port including the control character.
NOTE: W hen XON/XOFF is enabled, the multiport will continue to support hardw are handshaking lines.
22 Peripheral-to-multiport-to-hos t communication: W hen a peripheral dev ice transmits data to the host dev ice throug h a peripheral port, the data is r eceived and stor ed in a 3740-character receiv e buf fer (or 7740 receiv e buf f er for 525 units w ith Option 20) whic h in turn retr ansmits it to the host dev ice through the host port.
Host-to-multiport-to-periphera l c ommunication W hen the host device transmits data to a per ipheral device thr ough the multiport's host p.
24 Peripheral-to-multiport-to-hos t communication W hen a peripheral dev ice transmits data to host dev ice through the multiport's per ipheral port, the data is receiv ed and stored in a 256-character r eceive buffe r which in turn r etransmits it to the computer throug h the host port.
To access the configuration mode of the multipor t, connect a dumb terminal ( or a PC running a ter m inal emul ation program) to the host port: Port 5 of the 525H, Port 9 of the 528H and 529H, or Port 18 of the 5218H.
26 NOTE: Menu selection is case sensi tive. It is recommended that y our keyboard be i n the CAPS LOCK position. In the configuration mode, some characters ar e display ed wi th a HEX notation si nce all combinations from 00 Hex TO 7F Hex may be selected.
Status.......................................1 Set Serial Port Configuration................2 Set Message Terminate Character..............3 Set Data Block Length........................4 Set Control Character........................5 Set Mode of Operation.
28 You may now reconfigure Port 3 by selecting the appropri ate option (1-6) from the menu. For exampl e, to change the baud rate to 2400 baud, send character " 2 " (Set baud rate).
NOTE: W hen changing the configurati on of the host port, the multiport will also respond with: Change Device to NEW Configuration Before Answering This Request. CA UTION: This messag e reminds you to change the seri al port configuration of the host devi ce to match the new configuration of the host port.
30 By respondi ng to the Enter Request: message at the end of the main configurati on menu (see Section 6.1 ) with " 4 " (Set Data Block Length), y ou may change the data block leng th used in Mode 6.
By respondi ng to the Enter Request: message at the end of the main configurati on menu (see Section 6.1 ) with " 5 " (Set Control Character) , you may change the control character.
32 ! By respondi ng to the Enter Request: message at the end of the main configurati on menu (see Section 6.1 ) with " 6 " (Set Mode of Operation), y ou may change the cur rent mode of operation.
# Multipor ts power -up in the v erbose or menu-driv en mode. Only i n the menu-driv en mode can changes be saved per manently i n non-volatile memory .
34 b) SET WORD SIZE MENU 5....................1 6....................2 7....................3 8....................4 c) SET STOP BITS MENU 1....................1 1 1/2................2 2....................3 d) SET PARITY MENU None.................1 Even.
For exampl e, to conf igur e Port 2 in the non-v erbose mode at 300 baud rate, 7 bit w ord size, 2 stop bits, ev en parity , XON/XOFF enabled, line feed terminating character, data block length 250, control character Control- T , mode of operation 6, and XON/X OFF enabled, send the followi ng character string : ^TI^TC 22*233343526Y130A 4250*51466X.
36 To return to the v erbose mode, enter the multiport Control-T (or current control character) follow ed by ASCII capital J . If no other changes are needed, y ou may begin oper ations with y our multiport contro ller.
If you have pr oblems with your H-Series multiport contr oller, BayTech has a staff of applicati ons engineers on duty to assist you from 7 am to 6 pm (CST or C DT), Monday through Friday .
38 $ .
" Please check this troubleshooting guide before calling Bay Tech Technical Support. PROBLEM: CA NNOT CONFIGURE H-SERIES MULTIPORT SYMPTOM: CONTROL-T (OR CURRENT CONTROL CHA RACTER) FOLLOWED BY CA PITA L C SENT IN DUMB TERMINA L MODE DOES NOT INVOKE CONFIGURA TION MENUS.
40 CAUSE: Port config uration. SOLUTION: Match the baud r ate, word si ze, stop bits, parity and handshaking between the host dev ice and the host port. CAUSE: Port connecti on. SOLUTION: Be sure host dev ice is connected to host port of the H-Series mul tiport (the highest numbered port) .
CAUSE: Cable l ength. SOLUTION: BayTech will guaran t e e serial data transmission up to 150 feet at 9600 baud. If your cable exceeds thi s length, either use a shorter cable or low er the baud rate. CAUSE: Config uration problem. SOLUTION: Check baud r ate, word si ze, stop bits and parity on serial ports.
42 PROBLEM: CA N'T SELECT PERIPHERAL PORT FROM HOST DEVICE SYMPTOM: LEDs ON THE FRONT PA NEL DO NOT CHA NGE WHEN SELECTING DIFFERENT PERIPHERAL PORT. CAUSE: Cable. SOLUTION: Veri fy that the Tx and R x sig nals as well the handshake signals for the host dev ice are connected to the correct sig nals on the H-Series multipor t.
PROBLEM: CA N'T RECEIVE DATA FROM PERIPHERA L PORTS CAUSE: W rong peri pheral port selected. SOLUTION: If in Modes 1, 4, or 5, make sur e the host devic e sends the correct selection seq uence and/or request for messag e command. See Section 5.2 .
44 " " All messages from all ports 1, 32 All messages from selected por t 2, 32 ASCI.
Data block leng th 2, 4, 8, 11, 12, 15, 19, 25, 27, 30, 33-35 Data Communicati on Equipment 9 Data flow contr ol 11, 21 Data Terminal.
46 & Guarantee 38, 41 Handshaking 5, 10, 11, 21, 23, 27, 39, 40 Host port 1, 2, 4, 8, 12-25, 29, 33, 40 Humidity 5 .
Main config uration menu 25-27, 29- 32 Maintenance 36 Menu 2, 11, 25-35 Message terminati ng character 11-13, 17, 29 Missing characte.
48 Q,R Rack-mount 5 RAM 28- 32 Readme 6 Receiv e buffer 2, 15, 16, 19, 22, 24 Request for messages command 14, 18 RTS 9 Serial number.
&# UART 16 User- programmable 4, 11 Utility software diskette 6 VAC 5, 7 Verbose mode 33, 35, 36 Voltage 21- 24 .
OTHER BAYT ECH PRODUCTS Print Master 700 Series printer contr ollers ar e made in several different configurations satisfyi ng v a rious interface requirements. Each unit allow s computers to share, select and/or contend for printers easi ly and economically , without sw itching cabl es.
LaserShare is an inte lligent printer co ntroller tha t allows up to f o ur or eight computers to send data to a si ngle HP LaserJet laser pr inter. LaserShare MIO installs into the HP LaserJet Series IIISi, Series 4, and Series 4SI and will support serial speeds up to 460K bps.
TRA N-X high speed parallel/ser ial conv erter products allow you to extend paral lel cables to 1000+ feet and allow y our network ser ver, graphics w orkstation, or PC to send/recei ve data at speeds up to 46,000 characters per second.
Telplex Model TX104M is an asy nchronous statistical multi plexer wi th built-i n modem. Four indiv idual communications channels are multiplex ed into a single dial- up or leased telephone l ine, cutting phone line costs to a mini mum. The TX104M features a V.
Broadcasting (G-Series) : W ill simultaneously broadcast whatev er data is receiv ed on the host port out to either 4 or 8 peri pheral dev ices whil e sending data from a single selected peri pheral device back to the host devic e. This unit is also capable of operating i n a port expansion mode such as the A- S e r i e s .
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