Mitsubishi Electric MELSEC IQ-R series Reference Manual page 372

Monitor (word units) (command: MN, MQ)
Monitor the registered bit devices (X, Y, M, etc.) in 16-point units.
Monitor the registered word device (D, T, C, etc.) in 1-point unit.
• The bit device memory registered with WM command is monitored using MN command.
• The bit device memory registered with QM command is monitored using MQ command.
■Request data
Message wait
Command
• Command
ACPU common
M
4D
H
• Message wait: Specify the delayed time of the response transmission. (Page 347 Message wait)
■Response data
Monitoring result ( For the
number of device points )
The value of read device is stored in word units. (Page 74 Read data, write data)
■Communication example
Monitor bit devices or word devices specified with monitor data registration under the following conditions.
• Message wait: 0 ms
• Registered devices for monitoring: Current values of D15, W11E, T123, and 4 points (4 words) of Y060 to Y06F.
(Request data)
• When using MN (ACPU common command)
Message wait
M N 0
4D 4E 30
H H H
• When using MQ (AnA/AnUCPU common command)
Message wait
M Q 0
4D 51 30
H H H
(Response data)
Monitoring result ( For the number of device points )
1 2 3 4 0 0
(Decimal : 4660) (Decimal : 80)
31 32 33 34 30 30
H H H H H H
(D15) (W11E)
17 COMMUNICATING USING 1C FRAMES
370
17.4 Device Memory Read and Write
AnA/AnUCPU common
N
4E
H
5 0 0 0 6 4
0 0 0 0
(Decimal : 100)
35 30 30 30 36 34
H H H H H H
(Current value of T123) (Y06F) to (Y06C) (Y06B) to (Y068) (Y067) to (Y064) (Y063) to (Y060)
M Q
4D 51
H H
0 1 1 1 0 1 1 0
30 37
H H
0 1 0 0
36 34
H H