Protocol: Universal 232; Data Structure; Fieldbus Parameters; Rs232 Parameter Table - DEUTSCHMANN AUTOMATION UNIGATE CL-CANopen Instruction Manual

Implemented protocols with Universal Script - protocols application Deutschmann Automation GmbH & Co. KG

11.2 Protocol: Universal 232

The protocol designation "Universal 232" and the relation to the
"RS232-interface" in the description have eveloped over the years. The
protocol also works with RS422 and RS485 though!

11.2.1 Data structure

11.2.2 Fieldbus parameters

Trigger byte: See „The trigger byte", chapter 14
Length byte: See „The length byte", chapter 15

11.2.3 RS232 parameter table

11.2.3.1 Start character (232 Start character)

If this character is defined, the gateway evaluates only the data at the RS232 interface following
this start character. Each transmission from the gateway via the RS232 interface is initiated with
the start character in this case.

11.2.3.2 Length 232 (232 Length)

If this byte is activated, the gateway, at the receive end, awaits as many bytes of useful data as
specified in this byte by the RS232 transmitter. At the transmission end, the gateway then sets
this byte to the number of useful data items transmitted by it. If byte "Length232" is not defined,
the gateway, on reception at the RS232 interface, waits for the end criterion if this is defined. If no
end criterion is defined either, as many characters as can be transferred in the fieldbus transmit
buffer are read in via the RS232 interface.
As a special case for this parameter also a length byte with additional Timeout monitoring can be
set in WINGATE. In that case the received characters will be discarded at a Timeout.
Attention:
If "Timeout" is selected as end character, then this byte has no significance.
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fieldbus gateway UNIGATE
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CL - CANopen V. 3.7 23.2.22