Panasonic FP7 CPU Unit - Types of MEWTOCOL Communication; MEWTOCOL-DAT (Binary Communication); MEWTOCOL-COM (ASCII Communication)

MEWTOCOL Master/Slave Communication
5.1 Types of MEWTOCOL Communication
5.1.1 MEWTOCOL-DAT (Binary Communication)
 Instructions
In master communication, PLC has the sending right, and executes communication by
sending commands to devices that support MEWTOCOL-DAT, and receiving responses.
Messages in accordance with the protocol are automatically generated by PLC. In the user
program, reading and writing can be done simply by specifying the station no. and memory
address and executing SEND/RECV commands.
Our PLC supporting
MEWTOCOL-DAT
(Hex) 80 51 09 90 01 02 00
(Hex) 80 D1 FF 64 00 00 00
Command message
Response message
・・・・・・・・・・・・・・
・・・・・・・・・・・・・・
0DT101
100DT100
・・・・・・・・・・・・・・
・・・・・・・・・・・・・・
0DT00401
100DT00400
PLC
Specify and read/write address based on SEND/RECV command
Note: The above figure indicates the data part of MEWTOCOL-DAT. In communication via LAN, a header including size information of the sent data
is added.
5.1.2 MEWTOCOL-COM (ASCII Communication)
In master communication, PLC has the sending right, and executes communication by
sending commands to devices that support MEWTOCOL-COM, and receiving responses.
Messages in accordance with the protocol are automatically generated by PLC. In the user
program, reading and writing can be done simply by specifying the station no. and memory
address and executing SEND/RECV commands.
External device supporting
MEWTOCOL-COM
%01#RDD0040000401 (BCC) C
R
%01$RDD64000000 (BCC) C
R
Command message
Response message
・・・・・・・・・・・・・・
・・・・・・・・・・・・・・
0DT101
100DT100
・・・・・・・・・・・・・・
・・・・・・・・・・・・・・
0DT00401
100DT00400
PLC
Specify and read/write address based on SEND/RECV command
Note: The above figure indicates the data part of MEWTOCOL-COM. In communication via LAN, a header including size informati
on of the sent
data is added.
Note) In MEWTOCOL-COM7, there is no master communication function.
5-2