Mitsubishi Electric MELSEC iQ-R16MTCPU - Data Operation of Intelligent Function Module by Motion SFC Program; Data of Refresh Device; Precautions When Using SSCNETIII;H Head Module

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5 FUNCTIONS USED WITH SSCNET COMMUNICATION
5.6 Connection of SSCNETIII/H Head Module
Data operation of intelligent function module by Motion SFC
program
In addition to refresh of data by device, data read/write operations to the buffer memory of intelligent function modules on the
SSCNET/H head module can be executed by the RTO and RFROM instructions of Motion SFC programs.
Refer to the following for details.
MELSEC iQ-R Motion controller Programming Manual (Program Design)
Data of refresh device
The refresh of data by device, for the status of Motion CPU, or when there is a communication failure with the head module
are as follows.
Precautions when using SSCNETIII/H head module
Disconnect/reconnect function cannot be used for SSCNET/H head module. If executed it is ignored.
Classification Symbol Instruction Description
Others RTO Write buffer memory data to
head module
Writes word device data to the buffer memory of the intelligent function module mounted to
the SSCNET/H head module.
RFROM Read buffer memory data
from head module
Reads data from the buffer memory of the intelligent function module mounted to the
SSCNET/H head module, to the word device.
State Refresh of data
Bit device Word device
Input(RX) Output(RY) Input(RWr) Output(RWw)
At communication failure occurrence Clear Maintain
At STOP of Motion CPU Maintain
At Motion CPU operation stop error
occurrence
Clear