Bay Technical Associates 5218H Owner's Manual

OWNER'S MANUALH-SERIESMULTIPORTCONTROLLERS525H528H529H5218HBayTech publication #U140E043-04

BUFFER SIZE: 525H/529H - 3.7K Rx/256 byte Tx per portstandard; the 525H optionally available with 7.7K Rx/256byte Tx per port.528H/5218H - 256-byte R

6   After opening the box, check the packing list that comes with yourmultiport to ensure that you have received all compone

 All standard models require 115VAC, 50/60 Hz. power and come witha three-prong power cord. Do not attempt to operate the unit with atwo-pron

8 NOTE: Before you proceed with installation, make certain that thedevice connected to the host port is setup to have the sameconfi

 IMPORTANT: Before you proceed with cabling, you must knowwhether the devices you are connecting to your multiport are DTE(Data Terminal Equip

10If you are interfacing a DCE device to a DTE device, you must use aone-to-one straight cable as shown in Figure 2. If you are interfacinga DCE devi

 This section discusses user-programmable operations (see Section5.1), operating in the different modes (see Section 5.2), binary mode(see S

12 This is a single character that indicates a completed message to themultiport in Modes of Operation 2, 3, 4 a

 NOTE: For illustration purposes, the factory default control character(Control-T) will be used in the following descripti

14 Mode of Operation 3 provides multiplexing to the host port of a singlemessage from all peripheral ports. Single messag

Thank you for selecting a BayTech multiport controller.The data provided in this Owner's Manual explains the various waysyou can operate your uni

 Mode of Operation 6 provides time-division multiplexing. In thismode, the multiport continuously scans all peripheral po

16To clear the receive buffer for a selected peripheral port, send thecontrol character followed by ASCII capital R. All complete or partialmessages

For example, suppose the host device is transmitting and receivingdata from Port 1 and you wish to switch to Port 2. 1. Send Control-T to the multipor

18NOTE: The host device may select and transmit data to anyperipheral port while simultaneously receiving all messages from allperipheral ports.

 In Mode of Operation 5, a single message is sent to the host port froma selected peripheral port. Operation in Mode 5 enable

20 Binary mode allows all data received by the host port to be passedthrough to the selected peripheral port including the control chara

 NOTE: When XON/XOFF is enabled, the multiport will continue tosupport hardware handshaking lines. If this is not desired, you ma

22Peripheral-to-multiport-to-host communication:When a peripheral device transmits data to the host device through aperipheral port, the data is recei

   Host-to-multiport-to-peripheral communicationWhen the host device transmits data to a peripheral device throughthe multiport&apos

24Peripheral-to-multiport-to-host communicationWhen a peripheral device transmits data to host device through themultiport's peripheral port, the

NOTE: The information contained in this document is subject tochange without notice.Copyright 1993 by Bay Technical Associates, Inc.IBM PC, IBM PC/AT

 To access the configuration mode of the multiport, connect a dumb terminal (or a PC running a terminal emulation program) to the hos

26NOTE: Menu selection is case sensitive. It is recommended that yourkeyboard be in the CAPS LOCK position. In the configuration mode,some characters

Status...1Set Serial Port Configuration...2Set Message Terminate Character...3Set Data Blo

28You may now reconfigure Port 3 by selecting the appropriate option(1-6) from the menu. For example, to change the baud rate to 2400baud, send charac

NOTE: When changing the configuration of the host port, themultiport will also respond with:Change Device to NEW ConfigurationBefore Answering This Re

30 By responding to the Enter Request: message at the end of the mainconfiguration menu (see Section 6.1) with "4" (

 By responding to the Enter Request: message at the end of the mainconfiguration menu (see Section 6.1) with "5" (Se

32! By responding to the Enter Request: message at the end of the mainconfiguration menu (see Section 6.1) with "6" (

 #Multiports power-up in the verbose or menu-driven mode. Only in themenu-driven mode can changes be saved permanently in non-volat

34b) SET WORD SIZE MENU 5...1 6...2 7...3 8...4c) SET STOP BITS MENU 1..

TABLE OF CONTENTS1 GENERAL INFORMATION... 12 SPECIFICATIONS ...

For example, to configure Port 2 in the non-verbose mode at 300baud rate, 7 bit word size, 2 stop bits, even parity, XON/XOFFenabled, line feed termin

36To return to the verbose mode, enter the multiport Control-T (orcurrent control character) followed by ASCII capital J. If no otherchanges are need

If you have problems with your H-Series multiport controller, BayTechhas a staff of applications engineers on duty to assist you fr

38 $%This equipment generates and uses radio frequency energy and, if notinstalled

"Please check this troubleshooting guide before calling BayTechTechnical Support.PROBLEM: CANNOT CONFIGURE H-SERIES MULTI

40CAUSE: Port configuration.SOLUTION: Match the baud rate, word size, stop bits,parity and handshaking between the host deviceand the host port.CAUSE:

CAUSE: Cable length.SOLUTION: BayTech will guarantee serial datatransmission up to 150 feet at 9600 baud. If yourcable exceeds this length, either us

42PROBLEM: CAN'T SELECT PERIPHERAL PORT FROM HOSTDEVICESYMPTOM: LEDs ON THE FRONT PANEL DO NOTCHANGE WHEN SELECTING DIFFERENT PERIPHERALPORT.CA

PROBLEM: CAN'T RECEIVE DATA FROM PERIPHERAL PORTSCAUSE: Wrong peripheral port selected.SOLUTION: If in Modes 1, 4, or 5, make sure thehost dev

44""All messages from all ports 1, 32All messages from selected port 2, 32ASCII 16-20, 25, 26, 33, 36A

5.5 DATA FLOW CONTROL... 215.5.1 525H AND 529H ...

Data block length 2, 4, 8, 11, 12, 15, 19, 25, 27, 30, 33-35Data Communication Equipment 9Data flow control 11, 21Data Termin

46&Guarantee 38, 41Handshaking 5, 10, 11, 21, 23, 27, 39, 40Host port 1, 2, 4, 8, 12-25, 29, 33, 40Humidity 5

Main configuration menu 25-27, 29-32Maintenance 36Menu 2, 11, 25-35Message terminating character 11-13, 17, 29Missing charac

48Q,R Rack-mount 5RAM 28-32Readme 6Receive buffer 2, 15, 16, 19, 22, 24Request for messages command 14, 18RTS 9

&#UART 16User-programmable 4, 11Utility software diskette 6VAC 5, 7Verbose mode 33, 35, 36Voltage 21-24

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 The BayTech H-Series multiport controllers are flexible, multi-functiondata acquisition and control units that provide cost effec

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2Mode 3 Single message from all ports - Same as Mode 2,except that a single message from all peripheral devicesis sent to the host device upon reques

Figure 1 below shows six applications, one for each mode ofoperation.Figure 1

4 INTERFACE: EIA-232C (CCITT V.24), -12v mark, +12vspace. Optional EIA-422A (Option 17) and current loop(Option 12).TRANSMISSION: Asyn