Bay Technical Associates 525H, 5218H, 528H Problem Cant Select Peripheral Port from Host Device

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PROBLEM: CAN'T SELECT PERIPHERAL PORT FROM HOST DEVICE

SYMPTOM: LEDs ON THE FRONT PANEL DO NOT CHANGE WHEN SELECTING DIFFERENT PERIPHERAL PORT.

CAUSE: Cable.

SOLUTION: Verify that the Tx and Rx signals as well the handshake signals for the host device are connected to the correct signals on the H-Series multiport. See Section 4.

CAUSE: Configuration problem.

SOLUTION: Check baud rate, word size, stop bits and parity on serial ports. Make sure the ports on the H-Series multiport are configured to match the serial port parameters of your equipment.

CAUSE: Incorrect port selection sequence.

SOLUTION: Verify the selection sequence the host device is sending to select the desired peripheral port. The selection sequence for the 525H, 528H, 529H, and the 5218H consists of the control character followed by the desired peripheral port number. This will a two-digit number (01 to 17) for the 5218H.

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Contents Series Multiport Controllers Page Copyright 1993 by Bay Technical Associates, Inc Table of Contents Federal Communications Commission Radio Frequency Page Page Below shows six applications, one for each mode of operation USER-PROGRAMMABLE Configurations Factory POWER-UP Default ConfigurationsUL and CSA Listed Page Page Page DCE Port Signals 500H Series DCE to DTE Device Page Factory default is Carriage Return 0D Hex Page Page Page Page Page Page Page Page Host-to-multiport-to-peripheral communication Peripheral-to-multiport-to-host communication Host-to-multiport-to-peripheral communication Peripheral-to-multiport-to-host communication Page Operation Protocol Enter Port Number 0=Exit,Return For 110 135 300 600 1200 2400 4800 9600 Enter request 0AH Section Control Mode of Operation Main Menu SET Message Terminate Character TITC22*233343526Y130A4250*51466X Page Page Page Solutions Problem Garbage Data Symptom Missing Characters Symptom Random Garbage Characters Problem Cant Select Peripheral Port from Host Device Problem Cant Receive Data from Peripheral Ports Ccitt DOS Page Page Page Uart Other Baytech Products Page Page Series Multiport Controllers Page
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