Communication 
 
FPΣ User's Manual 
178 
•  Settings for COM port 1 (FPG-COM1, FPG-COM2) 
No.  Name  Set value 
410 
COM port 1 - station number  1 
412 
COM port 1 - communication mode  MEWTOCOL-COM Master/Slave 
413  COM port 1 - communication format
 *)
 
Data length:  7 bits/8 bits 
Parity:   None/Odd/Even 
Stop bit:    1 bit/2 bits 
End code:  CR 
Start code:  No STX 
415 
COM port 1 - baud rate 
*)
 2400–115200bit/s 
*)
 The setting must match the external device connected to the communication port. 
•  Settings for COM port 2 (FPG-COM2, FPG-COM4) 
No.  Name  Set value 
411 
COM port 2 - station number  1 
412 
COM port 2 - communication mode  MEWTOCOL-COM Master/Slave 
414  COM port 2 - communication format
 *)
 
Data length:  7 bits/8 bits 
Parity:   None/Odd/Even 
Stop bit:    1 bit/2 bits 
End code:  CR 
Start code:  No STX 
415 
COM port 2 - baud rate 
*)
 2400–115200bit/s 
*)
 The setting must match the external device connected to the communication port. 
Programming 
There is no programming required on the slave. Only the station number and the 
communication parameters must be set in the system registers. The program for the master 
side must send and receive commands according to the MEWTOCOL-COM protocol. 
MEWTOCOL-COM contains the commands used to control and monitor the slave operation. 
If a software program such as PCWAY is used on the computer side, PLC data can easily be 
read and written without having to think about the MEWTOCOL-COM protocol. 
 
8.5.5.1  1:1 Communication with Computer 
For a 1:1 MEWTOCOL-COM connection between the FPΣ and a computer, an RS232C cable 
is needed. Communication is performed via commands from the computer and responses 
from the PLC. 
RS232C
 
1:1 MEWTOCOL-COM connection between a computer and the FPΣ 
1
 
Command message 
2
Response message