Rockwell Automation 2755-SNx Adaptascan Bar Code Readers - Manual (Page 132)

8–4 Communicating with a PLC-5
R
over an RS-232 or RS-422 Link
Publication 2755-6.8
•
Configure Channel 0 in the User Mode Channel 0 Configuration
screen.
Note: Termination 2 is set for \0xa or Line Feed [LF] , and
Termination 1 is set for \0xd or Carriage Return [CR] . These
terminators, along with the ARL instruction in the PLC-5, allow the
User port to read in one message at a time with [CR][LF]
terminators.
The sample ladder logic below instructs the PLC-5 to:
•
Read one string of ASCII data terminated with a [CR][LF] .
Refer to your PLC-5 user manual for detailed information on using
the PLC-5 programming software including the ASCII instructions.
PLC-5 Ladder Logic
Program