Mitsubishi Electric MELSEC IQ-R series Reference Manual page 370

Register monitor data (word units) (command: WM, QM)
Register the bit devices (X, Y, M, etc.) to be monitored in 16-point units.
Register the word devices (D, T, C, etc.) to be monitored in 1-point units.
A mixture of word devices and bit devices (16 bit units) can be specified.
Monitor the device memory registered in word units using the following command.
Page 370 Monitor (word units) (command: MN, MQ)
■Request data
Command Message wait
• Command
ACPU common
W
57
H
• Message wait: Specify the delayed time of the response transmission. (Page 347 Message wait)
• Number of device points: Convert the numerical value to 2-digit ASCII code (hexadecimal), and send it from the upper
digits.
• Device: Specify the devices to be monitored. (Page 351 Device codes, device numbers)
Specify the number of device points within the following range:
1  Number of device points  20
When using the WM command and accessing ACPU other than AnA/AnU, device X (input) has two
processing points per point.
■Response data
There is no response data for this command.
■Communication example (Monitor data registration in word units)
Register the monitor data in a word unit under the following conditions.
• Message wait: 0 ms
• Number of device points: 4 points (4 words)
• Device: Current value of D15, W11E, and T123, and Y060 to Y06F
(Request data)
• When using WM (ACPU common command)
Message wait
Number of
device points
W M 0 0 4
57 4D 30 30 34
H H H H H
• When using QM (AnA/AnUCPU common command)
Message wait
Number of
device points
Q M 0 0 4
51 4D 30 30 34
H H H H H
Device
Y 0 0 0 0
59 30 30 30 30 36
H H H H H
17 COMMUNICATING USING 1C FRAMES
368
17.4 Device Memory Read and Write
Number of
Device
device points
(first point)
(n points)
AnA/AnUCPU common
M
4D
H
Device Device
D 0 0 1 5 W 0
44 30 30 31 35 57 30
H H H H H H H
Device
D 0 0 0 0 1 5
44 30 30 30 30 31 35
H H H H H H H
6 0
30
H H
Device
(nth point)
Q M
51 4D
H H
Device
1 1 E T N 1 2
31 31 45 54 4E 31 32
H H H H H H H
Device
W 0 0 0 1 1 E
57 30 30 30 31 31 45
H H H H H H H
Device
3 Y 0 0 6 0
33 59 30 30 36 30
H H H H H H
Device
T N 0 0 1 2 3
54 4E 30 30 31 32 33
H H H H H H H