FPΣ
13.5 Table of Special Internal Relays
13 - 23
Relay No. Name Description
R9020 RUN mode flag Turns off while the mode selector is set to PROG.
Turns on while the mode selector is set to RUN.
R9021 Not used
R9022 Not used
R9023 Not used
R9024 Not used
R9025 Not used
R9026 Message flag Turns on while the F149 (MSG) instruction is executed.
R9027 Not used
R9028 Not used
R9029 Forcing flag Turns on during forced on/off operation for input/output relay and
timer/counter contacts.
R902A Interrupt enable flag Turns on while the external interrupt trigger is enabled by the ICTL
instruction.
R902B Interrupt error flag Turns on when an interrupt error occurs.
R902C Not used
R902D Not used
R902E Not used
R902F Not used
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