FPΣ User's Manual
8.5 MEWTOCOL-COM
171
8.5 MEWTOCOL-COM
This communication mode uses the proprietary MEWTOCOL-COM protocol to exchange data
between a master and one or more slaves. This is called 1:1 or 1:N communication. A 1:N
network is also known as a C-NET.
MEWTOCOL-COM connection between a computer and the FPΣ
1
Command message
2
Response message
There is a MEWTOCOL-COM master function and a MEWTOCOL-COM slave function. The
side that issues commands is called master. The slave receives the commands, executes the
process and sends back responses. The slave answers automatically to the commands
received from the master, so no program is necessary on the slave.
MEWTOCOL-COM master function
The master can be a PLC or any external device supporting the master function. To use the
built-in master functionality of the PLC, select MEWTOCOL-COM Master/Slave in the system
registers and implement a PLC program. The applicable instructions are F145_WRITE_DATA
and F146_READ_DATA.
MEWTOCOL-COM Master/Slave mode is recommended over program controlled mode since
programming is easier.
The master function can be used for communication with all Panasonic devices equipped with
a MEWTOCOL-COM slave function, for example PLCs, IPDs, temperature controllers,
message runners, or eco-power meters.
FP-e
FP-e
FP-X
KT KT
FP Σ
1
Master
2
Slave
NOTE
• The master function cannot be used with the TOOL port.
• Do not execute the F145_WRITE_DATA and F146_READ_DATA instructions
when the unit is used as a slave unit.
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