Communication 
 
FPΣ User's Manual 
162 
Communication modes 
Communication mode  1:1 communication  1:N communication 
MEWTOCOL-COM Master/Slave  X X 
Program controlled  X X 
PLC Link  X
*)
 
Modbus RTU Master/Slave  X X 
 
NOTE
 
PLC Link is only available for COM port 1. 
 
8.2.5.1  DIP Switch Setting on FPG-COM4 
There are two DIP switches on the cassette which must be set for RS485 connections: 
•  switch SW1-1 to set the terminating resistor on the first and on the last station 
•  switch SW1-2 to set the baud rate 
For RS485 connections (COM port 1), the baud rate must be set in the system registers and
 
with the DIP switch. (For RS232C connections, the baud rate is only set in the system 
registers.) For PLC Link, the baud rate must be set to 115200bit/s. 
Switch  Function  Switch position  Setting 
ONOFF
 
General station (initial 
setting) 
SW1-1 
Terminating 
resistor 
ONOFF
 
First and last station 
ONOFF
 
19200bit/s 
SW1-2 Baud rate 
ONOFF
 
115200bit/s (initial 
setting 
1
2
O
N
ONOFF
SW1
 
Rear of cassette 
     
8.2.5.2  Difference in Dimensions 
The FPG-COM4 communication cassette is 5mm longer than the other communication 
cassettes. 
5mm