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8-6. Special Internal Relays
8-6. Special Internal Relays
The special internal relays are used for special purposes in the FP-M programmable controller.
These special internal relays cannot output. Use special internal relays only as contacts.
Address
Name
Description
R9000
R9005
R9006
R9007
R9008
R9009
R900A
R900B
R900C
R900D
R900E
R900F
R9010
R9011
Self-diagnostic
error flag
Battery error flag
(Non-hold)
Battery error flag
(Hold)
Operation error flag
(Hold)
Operation error flag
(Non-hold)
Carry flag
> flag
= flag
< flag
Auxiliary timer
instruction (
F137
)
Programming tool
port error flag
Constant scan
error flag
Always ON relay
Always OFF relay
Turns ON when a self-diagnostic error occurs.
The self-diagnostic error code is stored in DT9000.
Turns ON for an instant when a battery error occurs.
Turns ON and keeps the ON state when a battery error occurs.
Turns ON and keeps the ON state when an operation error occurs.
The error address is set in DT9017.
Turns ON for an instant when an operation error occurs.
The error address is set in DT9018.
Turns ON for an instant,
- when an overflow or an underflow occurs.
- when “1” is set by one of the shift instructions.
This is also used as flag for the
F60 (CMP)
instruction.
Turns ON for an instant when the compared results are larger.
Turns ON for an instant,
- when the calculated results become 0 in the high-level instructions.
- when the compared results are equal in the high-level instructions.
Turns ON for an instant when the compared results are smaller.
Turns ON when the set value is decreased and reaches 0.
Turns ON when a programming tool port error occurs.
Turns ON when a constant scan error occurs.
Always ON.
Always OFF.
Содержание FP-M Hardware
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