Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 21

Representation of device No. used in this manual
The "R" and "Q" beside the device No. of positioning dedicated signals such as "[Rq.1140] Stop command (R: M34480+32n/
Q: M3200+20n)" indicate the device No. for the device assignment methods shown below. When "R" and "Q" are not beside
the device No., the device No. is the same for both device assignment methods.
Symbol Device assignment method
R MELSEC iQ-R Motion device assignment
Q Q series Motion compatible device assignment
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