FPΣ User's Manual 
 
8.4 Communication Parameters 
165 
8.4 Communication Parameters 
The communication parameters are set in the system registers of the PLC. The 
communication ports occupy different bit positions of the same system register, so individual 
settings for each communication port are possible. Make settings for the communication 
mode, communication format, baud rate, station number, and receive buffer if necessary. 
During PROG mode: 
Use the programming tool to enter settings for the communication port in the system registers. 
During RUN mode: 
Use the SYS1 instruction to change the communication parameters. Please refer to the 
FPWIN Pro online help for detailed information. 
The communication mode can be switched using F159_MRTN (see page 
169). 
 
8.4.1  Setting System Registers in PROG Mode 
 
1.
2.
3.
Procedure
 
1.  Double-click "PLC" in the navigator 
2.  Double-click "System Registers" 
3.  Double-click "COM Port" 
The communication ports occupy different bit positions of the same system 
register, so individual settings for each communication port are possible. 
To make settings for the TOOL port, select "TOOL Port" under "System 
Registers". 
The following communication parameters are set in the system registers: 
Communication mode 
Select a communication mode. The factory setting for the communication mode is 
"MEWTOCOL-COM Master/Slave". 
 
With FPG-COM2 and FPG-COM4, the two ports of the communication cassette can be used 
independently and simultaneously. They can be set to "MEWTOCOL-COM" or "Program 
controlled". There is no restriction when multiple ports are used.