Mitsubishi Electric MELSEC iQ-R Series User Manual page 18

■Input and output of the master station
Data can be input to and output from all slave stations. Areas are assigned in the order of station number.
• For input to the master station, data in RX and RWr of all slave stations are stored into RX and RWr of the master station. In
a local station, however, data in RY and RWw of a local station are stored into RX and RWr of the master station.
• For output from the master station, data stored in RY and RWw of the master station are output to RY and RWw of all slave
stations. In a local station, however, data are stored into RX and RWr.
■Input and output of a local station
Data can be input from all slave stations. Data can be output from a local station only to the master station. Areas are
assigned in the order of station number.
• For input to local stations, data in RY and RWw of other stations are stored into RX and RWr of local stations. Data in RX
and RWr of other slave stations are stored into RY and RWw of local stations.
• For output from local stations, data stored in RY and RWw (own station send range) are stored into RX and RWr of the
master station.
How to start communications
Power on the slave station, then master station to start data link.
When the module parameter settings are reflected, the master/local module starts data link automatically.
• When the settings are configured using an engineering tool, resetting the CPU module or powering off and on the system
reflects the settings.
• When the settings are configured using dedicated instructions, executing the dedicated instructions reflects the settings.
Note that the master station sends data only to a station where data link has been started. The master station does not send
data to a station where data link is not being performed.
1 FUNCTIONS
16
1.1 Cyclic Transmission