
8-3
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
Command
name
Functions
50H
Write word data
The specified number of words of data are written, starting
from the specified first word number in the data area.
51H
Read word area
The specified number of words of data are read, starting from
the specified first word number in the data area.
52H
Write contact
information
Data is written to the specified relay of the relay area.
53H
Read contact
information
Data is read from the specified relay of the relay area.
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.
Summary of Contents for FP2 ET-LAN
Page 11: ...Chapter 1 Unit Functions and Restrictions ...
Page 14: ...1 4 1 1 4 Connecting to a Network AFP2790 100BASE TX 10BASE T 10BASE5 AUI AFP27901 ...
Page 24: ...1 14 ...
Page 25: ...Chapter 2 Names and Functions of Parts ...
Page 29: ...Chapter 3 Connection for LAN Cable ...
Page 37: ...Chapter 4 Confirming the Design Contents ...
Page 49: ...Chapter 5 Initialization Processing and Termination Processing ...
Page 68: ...5 20 ...
Page 69: ...Chapter 6 Open Processing and Close Processing ...
Page 84: ...6 16 ...
Page 85: ...Chapter 7 Computer Link Function ...
Page 94: ...7 10 Program example ...
Page 97: ...7 13 Example of communication data Same hierarchy communication ...
Page 100: ...7 16 Example of communication data Other hierarchy communication ...
Page 101: ...7 17 Other hierarchy communication for MEWTOCOL COM ...
Page 102: ...7 18 ...
Page 103: ...Chapter 8 Data Transfer Function ...
Page 111: ...8 9 Program example ...
Page 114: ...8 12 Example of communication data Same hierarchy communication ...
Page 117: ...8 15 Example of communication data Other hierarchy communication ...
Page 119: ...8 17 Other hierarchy communication for MEWTOCOL DAT ...
Page 120: ...8 18 ...
Page 121: ...Chapter 9 Transparent Communication Function ...
Page 137: ...9 17 Program example ...
Page 143: ...Chapter 10 Auto Connection ...
Page 155: ...10 13 Case 1 Ladder program example ...
Page 169: ...Chapter 11 E mail Function ...
Page 200: ...11 32 ...
Page 201: ...Chapter 12 Error Log Function ...
Page 203: ...12 3 Latest log block area Log block reading processing area ...
Page 219: ...Chapter 13 Troubleshooting ...
Page 224: ...13 6 13 2 4 Troubleshooting Flowchart ...
Page 225: ...13 7 ...
Page 229: ...Chapter 14 MEWTOCOL Communication Procedure ...
Page 242: ...14 14 To write to an index register ...
Page 262: ...14 34 ...
Page 263: ...Chapter 15 Specifications ...
Page 292: ...15 30 15 6 ASCII Codes ...
Page 293: ...15 31 15 7 Dimensions AFP2790 FP2 ET1 AFP27901 FP2 ET2 ...
Page 294: ......
Page 295: ...Chapter 16 Sample Program ...
Page 298: ...16 4 ...
Page 299: ...16 5 ...
Page 300: ...16 6 ...
Page 301: ...16 7 ...
Page 304: ......
Page 305: ......