Mitsubishi Electric L26CPU-BT User Manual page 23

(4) Intelligent device station communication
The intelligent device station is a station that can handle bit and word data.
Communication between a master station and an intelligent device station uses two types of transmission
methods: cyclic transmission and transient transmission (refer to
(a) Cyclic transmission
Signals for handshaking with the intelligent device station (positioning start, positioning complete, etc.) are
communicated using the remote input RX and remote output RY.
Numeric data (positioning start number, present feed value, etc.) is communicated using remote registers RWw
and RWr.
Programmable
controller CPU
Automatic refresh
X
Automatic refresh
Y
Automatic refresh
W
Automatic refresh
W
(b) Transient transmission
Reading (G(P).RIRD) or writing (G(P).RIWT) of buffer memory data in an intelligent device station is available
at any timing.
Programmable
controller CPU
G(P).RIWT
G(P).RIRD
Master station
Remote
Link scan
input
RX
Remote
Link scan
output
RY
Remote
Link scan
register
RWw
Remote
Link scan
register
RWr
Master station
Transient
transmission
area
Page 124, Section 8.1.4).
Intelligent device station
Remote
input
RX
Remote
output
RY
Remote
register
RWw
Remote
register
RWr
Intelligent device station
Transient transmission
Buffer memory
Transient transmission
CHAPTER 1 FEATURES
1
Servo amplifier
21