Mitsubishi Electric MELSEC iQ-R Series User Manual page 261

■Received parameters are distinguished upon receipt of a host command sending message
(S2F41)
9
When there is a parameter list that differs by remote command, such as with a host command sending message (S2F41), it is
possible to send and receive messages by simply defining one message that includes all parameter elements without defining
messages for each remote command if the selection list function is used.
By configuring the selection register for each parameter list, and furthermore specifying a selection keyword for each
parameter name of each parameter list, whether the parameter names of the received parameters match the keywords
specified for each parameter list is sent back to each selection register.
When there was a match, 1 is returned. When there is no match, 0 is returned.
It is possible to conserve data storage space because message definition is concluded by a single item and the assignment is
completed only by the data storage area of the necessary parameter element count.
Usage method
■Configuring selection lists
Select the "Select List" checkbox for the new list of the parameter list.
The following section is an example of the case of a host command confirmation message (S2F42).
9 SECS/GEM COMMUNICATION SOFTWARE KNOWLEDGE
259
9.12 Remote Command Control Using the Selection List Function