Chapter 1 Functions - Mitsubishi Electric MELSEC iQ-R Series User Manual

1
FUNCTIONS
1.1
Data Communication
Data communication with the master station
Data is communicated by the following methods between the remote head module and the master station.
• Cyclic transmission ( Page 17 Cyclic Transmission)
• Transient transmission ( User's manual for the master/local module used)
Data communication with the connected module
The following methods are used for data communication with a module connected to the remote head module.
Data communication method
I/O refresh
Intelligent function module refresh
Network module refresh
1 FUNCTIONS
16
1.1 Data Communication
Description
Input refresh Inputs ON/OFF data from the input module, intelligent function module, or
network module to the remote head module.
Output refresh Outputs ON/OFF data from the remote head module to the output module,
intelligent function module, or network module.
Performs I/O data communication between the buffer memory of the intelligent
function module and the remote head module device.
Performs I/O data communication between link special relay (SB), link special
register (SW), as well as link device of the network module and the remote head
module device.
Reference
Page 17 Cyclic
transmission of bit
device data
Page 23 Cyclic
transmission of word
device data
 User's manual for
the network module
used