FPΣ
13.5 Table of Special Internal Relays
13 - 25
Relay No. Name Description
R9040 Not used
R9041 COM. 1 port PLC link
flag
Turns on while PLC link function is used.
R9042 COM. 2 port commu-
nication mode flag
This goes on when the general-purpose communication function is used.
It goes off when MEWTOCOL is used.
R9043 to
R9046
Not used
R9047 COM.2 port commu-
nication error flag
This goes on if a transmission error occurs during data
communication.
This goes off when a request is made to send data, using the F159 (MTRN)
instruction.
R9048 COM.2 port reception
done flag during gen-
eral purpose commu-
nicating
Turns on when the end code is received during the general-purpose com-
munication.
R9049 COM.2 port transmis-
sion done flag during
general
purpose communicat-
ing
This goes on when transmission has been completed when using general-
purpose communication.
It goes off when transmission is requested when using general-purpose
communication.
R904A to
R904F
Not used
R9050 MEWNET-W0
PLC link transmission
error flag
When using MEWNET-W0
- turns on when transmission error occurs at PLC link.
- turns on when there is an error in the PLC link area settings.
R9051 to
R905F
Not used
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