Mitsubishi Electric MELSEC iQ-R Series User Manual page 294

Receive user frame setting details
The following explains the purpose and designated value/stored value of each setting data for data reception using a user
frame.
■User frame use enable/disable designation (Un\G173/333)
Designate "Use" when using user frames to receive data.
Buffer memory address
• Write '1' in the user frame use enable/disable designation area.
• After the preparation for receiving data using the user frames is completed, '2' is written in the user frame use enable/
disable designation area. (Set by C24)
• After the value in the user frame use enable/disable designation area is changed from '1' to '2', start receiving data used by
the user frame.
Until '2' is written in the user frame use enable/disable designation area, data transmission cannot be started.
15 DATA COMMUNICATIONS USING USER FRAMES
292
15.2 Data Reception
b15
Un\G173/333
to b0
(Default 0H)
Write 1H
0: Do not use.
1: Use.
2: Data communication enable (C24 is set)