Communication With Remote Device Stations - Mitsubishi Electric L26CPU-BT User Manual

8.1.2

Communication with remote device stations

This section explains an overview of the communication between the master and remote device stations.
In the communication with remote device stations, the signals for handshaking with remote device stations (initial data
request flag, error reset request flag, etc.) are communicated using remote input RX and remote output RX.
Numeric data (averaging processing specification, digital output value, etc.) is communicated using remote register
RWw and remote register RWr.
Programmable
controller CPU
Network
parameters
Automatic
refresh
parameters
X
Y
W
W
Master station
1)
Network
parameters
Buffer memory
3)
Remote input
Automatic refresh
RX
4)
Remote output
Automatic refresh
RY
6)
Remote register
Automatic refresh
RWw
9)
Remote register
Automatic refresh
RWr
CHAPTER 8 FUNCTIONS
Remote device station
Remote input
2) RX
Handshaking signals
Link scan
such as remote READY
and initial data
processing request flag
Remote output
RY
5)
Handshaking signals such
Link scan
as error reset request flag
and initial data processing
complete flag
Remote register
RWw
7)
Numeric data for
Link scan
averaging processing
setting, A-D conversion
enable/disable setting,
etc.
Remote register
8)
RWr
Link scan
Numeric data such as
digital output values,
detected temperature
value, etc.
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