Bay Technical Associates 5218H, 528H, 529H, 525H owner manual

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In Mode of Operation 5, a single message is sent to the host port from a selected peripheral port. Operation in Mode 5 enables the host device to receive one complete message from a selected peripheral port by sending the control character followed by ASCII capital S and the desired port number (1 to 4 for the 525H, 1 to 8 for the 528H and 529H, and 01 to 17 for the 5218H). If no message is available, the host port will transmit a Carriage Return/Line Feed.

NOTE: The host device may select and transmit data to any peripheral port while simultaneously receiving single messages from a specific peripheral port.

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Mode of Operation 6 provides time-division multiplexing. The internal processor in Mode 6 continuously scans all peripheral ports checking for characters in the receive buffers. If a receive buffer contains characters, the characters are transmitted through the host port preceded by a port identification code which consists of the control character followed by the peripheral port number. Transmission continues until the buffer is empty or until a user-defined maximum data block length has been transmitted. After transmission is completed, the multiport will continue its scanning sequence.

If a control character is received by the multiport from a peripheral device, a second control character is added automatically. This technique allows you to detect the control character as a data character when it is sent through the multiport.

NOTE: The host device may select and transmit data to any peripheral port while simultaneously receiving data blocks from all peripheral ports.

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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 Factory POWER-UP Default Configurations USER-PROGRAMMABLE 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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