TOC
Appendix C
FSCS Protocol
This appendix describes the communications protocol for the FSCS.
The FSCS uses a Q-Card processor board with the Andover Data
Interface firmware.
General Information
The CX9200 communicates with the Q-Card via an RS-232 port. The
Andover Data Interface firmware allows the CX9200 to control the state
of the LEDs and read the state of the switches on the FSCS.
You will receive information regarding the LED numbers and switch
numbers from the FSCS manufacturer.
Refer to Chapter 3 for information regarding how to set the Q-Card
baud rate on the and how to connect the field wiring to the FSCS.
Communications Format
The format for the ASCII serial data is as follows:
8 Data bits
1 Start bit
1 Stop bit
No Parity
All commands to the FSCS and responses from the FSCS begin with a
left parenthesis and end with a right parenthesis. If the data coming into
the FSCS does not meet these requirements, it will be ignored. When
sending a command to the FSCS, all carriage returns, line feeds, and
space characters are automatically filtered out of the data stream without
affecting the data.
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