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2.6 Communications with a Mitsubishi PLC (A-compatible 1E Frame protocol)
Message Functions
2-138
O Register Writing Range LO (PARAM44 and PARAM45)
This parameter is not used for the A-compatible 1E Frame protocol.
O Register Writing Range HI (PARAM46 and PARAM47)
This parameter is not used for the A-compatible 1E Frame protocol.
For System Use (PARAM48)
This parameter is used by the system. It contains the channel number of the communications buffer that is
currently in use.
Reserved for System (PARAM49 to PARAM51)
This parameter is used by the system.
A user program must set PARAM48 to 0 on the first scan after startup. Thereafter, do not change the
value of PARAM48 from a user program or by any other means. PARAM48 will be used by the sys-
tem.
Do not change the values of PARAM49 to PARAM51 from a user program or by any other means.
Note
Note