List Of Commands And Functions For The Mc Protocol - Mitsubishi Electric FX3U-ENET-ADP User Manual

FX -ENET-ADP User's Manual
3U
7.4

List of Commands and Functions for The MC protocol

The following table lists the commands and functions when an external device accesses the PLC.
Function
Batch read
Batch write
Device
memory
Test
(Random write)
Remote RUN
PLC control Remote STOP
PLC model name read
Loopback test
*1. Make sure to set a multiple of 16 as the head device number of bit devices.
*2. Read or write 32 bits at a time when reading or writing double-word data in a user program, etc.
*3. It is not possible to specify C199 or lower (16 bits) and C200 or higher (32 bits) at the same time.
62
Command/
response type
Bit units 00H Reads bit devices (X, Y, M, S, T, C) in 1-point units.
Reads bit devices (X, Y, M, S, T, C ) in 16-point units.
Reads word devices (D, R, T, C ) in 1-point units.
Word units 01H
The maximum number of communication points is 32 when
C200 or more is specified.
Bit units 02H Writes to bit devices (X, Y, M, S, T, C ) in 1-point units.
Writes to bit devices (X, Y, M, S, T, C ) in 16-point units.
Writes to word devices (D, R, T, C ) in 1-point units.
Word units 03H
The maximum number of communication points is 32 when
C200 or more is specified.
Sets/resets bit devices (X, Y, M, S, T, C) in 1-point units by
Bit units 04H
arbitrarily designating the devices and device number.
Sets/resets bit devices (X, Y, M, S, T, C) in 16-point units by
arbitrarily designating the devices and device number.
Word units 05H
Sets/resets word devices (D, R, T, C) in 1-point units by
arbitrarily designating the devices and device numbers.
Not applicable for 32 bit devices from C200 to C255.
13H
Requests remote RUN/STOP to PLC.
14H
15H Reads PLC model name code.
Returns the character received from the other node to that node
16H
with the data as it is.
7 Communication Using MC Protocol
7.4 List of Commands and Functions for The MC protocol
Processing
*2*3
*2*3
Number of points
processed per
communication
256 points
*1
32 words (512 points)
64 points
160 points
*1
10 words (160 points)
64 points
80 points
10 words (160 points)
10 points
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