Communications On The Rs-232C Interface; Rs-232C - Omron ZX-GT User Manual

RS-232C

Communications on the RS-232C Interface

You can use the RS-232C connector of the Interface Unit to perform serial communication
with external devices such as a PC or PLC.
Communications Interface Specifications
This interface allows data communications compliant with the EIA RS-232C standard up
to a maximum speed of 38400 bps.
Communication method
Synchronization method Start-stop
Transmission code
Baud rate
Data length
Stop bit
Parity
Header/footer
Communications on the RS-232C interface p.80
Communication Method
The ZX-GT uses the "command response method."
By this method, command processing is executed when a command is sent to the
Controller from an external device, and a response is returned to the external device from
the Controller, when command processing ends. An error response is returned when the
command sent from the external device is in error or when an error occurs during
command processing on the Controller.
When commands are issued continuously, issue the next command after the response is
received.
Controller
100
RS-232C
Full duplex
ASCII
1200, 2400, 4800, 9600, 19200, 38400 (bps)
7, 8 (bits)
1, 2 (bits)
NONE (none), ODD (odd), EVEN (even)
ST.ET (STX+ETX), CR, CR.LF (CR+LF)
Command
Command
processing
Response
External device
ZX-GT User's Manual