This communication mode uses the MEWTOCOL-COM or Modbus RTU protocol to exchange data between a master and one or more slaves. This is called 1:1 or 1:N communication. 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.
The MEWTOCOL-COM master function is not supported by all PLCs.
Modbus area address |
Modbus memory name |
Memory type |
Panasonic PLCs address |
|---|---|---|---|
000001 … |
COIL |
1-bit |
Y0 … |
002049 … |
R0 … |
||
100001 … |
INPUT |
1-bit |
X0 … |
400001 … |
HOLDING_REGISTER |
16-bit |
DT0 … |
300001 … |
INPUT_REGISTERS |
16-bit |
WL0 … |
302001 … |
LD0 … |
For reference number and address area ranges supported by the Panasonic PLCs, please refer to the User's Manual of the PLC. If the reference number is outside the supported range, an error is returned.
The reference numbers are part of the Modbus standard and are required any time other devices are connected to Panasonic PLCs with the aim of communicating via Modbus.
FP-X0, MCU: For PDF files, please refer to Panasonic Download Center 