Mitsubishi Electric MELSEC iQ-R Series - Page 381

17 COMMUNICATING USING 1C FRAMES
17.5 Read and Write Extended File Register
379
17
Register monitor data (command: EM)
Register the device number to be monitored in 1-point units.
Monitor the extended file register registered with EM command using the following command.
Page 380 Monitor (command: ME)
■Request data
• Command
• 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 number: Specify the block number and device number of the device to be monitored with 7 digits. (Page 374
Device number)
Specify the number of device points within the following range:
1  Number of device points  20
■Response data
There is no response data for this command.
■Communication example
Perform monitor data registration of 4 points (4 words) under the following conditions.
• Message wait: 0 ms
• Number of device points: 4 points (4 words)
• Device number: Register R1234 of block number 5, R2345 of block number 6, R3055 of block number 15, and R8000 of
block number 17.
(When the extended file register of block number 1 to 8 and 10 to 17 exist.)
ACPU common
EM
45 H 4D H
Message wait
Number of
device points
Device No. ( for the number of
device points)
EM
45H 4DH
EM
45H 4DH 32H
04
30H 34H
5
35H30H
02R
52H
1
31H30H
3
33H 34H
40
30H
4
33H 34H 35H
5035
35H
31H
0
52H
30H 30H
07
37H
1R
30H
8
38H
0
52H
6
36H
R
31H
5
30H 35H 35H
5102
32H 33H
R
52H
3
Message wait
Number of
device points
Device No. Device No. Device No.
Device No.