Commands And Functions That Can Be Used - Panasonic FP2 ET-LAN Technical Manual

8.1.2 Commands and Functions that can be Used

Data transfer commands and MEWTOCOL-DAT command messages
Executing a data transfer command sends a MEWTOCOL-DAT command message to the partner node
-
programmable controller, which then automatically returns a response message.
When data is being sent from a programmable controller to a computer, the reception of the
-
MEWTOCOL-DAT command message and the sending of the response message are handled on the
computer side.
When data is being sent from a computer to a PLC, the MEWTOCOL-DAT command message is sent
-
to the partner node programmable controller, which automatically sends back a response message.
MEWTOCOL-DAT commands
Command code
50H Write word data
51H Read word area
52H Write contact
information
53H Read contact
information
Key Point:
Commands and responses used with the ET-LAN unit have a dedicated header added to the
-
"MEWTOCOL-DAT" communication procedure of the FP series PLC.
-
Reference: For detailed information on MEWTOCOL-DAT, please see Chapter 12.
Command
name
The specified number of words of data are written, starting
from the specified first word number in the data area.
The specified number of words of data are read, starting from
the specified first word number in the data area.
Data is written to the specified relay of the relay area.
Data is read from the specified relay of the relay area.
Functions
8-3