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8-3. Table of Special Internal Relays
8-3. Table of Special Internal Relays
The special internal relays are used for special purposes in the FP1 Programmable Controller.
These special internal relays cannot output. Use special internal relays only as contacts.
Notes:
• Special data registers DT9017 and DT9018 are available only for FP1s with CPU version 2.7 or later.
(All FP1s with a suffix “B”on the part number have this function.)
• The
F137 (STMR)
is available for FP1 C56 and C72 series with CPU version 2.7 or later. (All FP1 C56
and C72 series with a suffix “B” on the part number have this function.)
Address
R9000
R9005
R9006
R9007
R9008
R9009
R900A
R900B
R900C
R900D
R900E
R900F
R9010
R9011
Name
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)
RS422 error flag
Constant scan
error flag
Always ON relay
Always OFF relay
Description
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. (See note.)
Turns ON for an instant when an operation error occurs.
The error address is set in DT9018. (See note.)
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)/F61 (DCMP)
instructions.
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. (See note.)
Turns ON when an RS422 error occurs.
Turns ON when a constant scan error occurs.
Always ON.
Always OFF.
Availability
C14/
C16
C24/
C40
N/A
A: Available, N/A: Not available
C56/
C72
A
A
A
A
N/A
A
Содержание FP1
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