Panasonic FP0 Series, User Manual, Page: 257 / 382

14-15
14.1.2 Table of Special Internal Relays for FP0
The special internal relays turn on and off under special conditions. The on and off states are not output
externally. Writing is not possible with a programming tool or an instruction.
Address Name Description
R9000
Self-diagnostic error
flag Turns on when a self-diagnostic error occurs.
The self-diagnostic error code is stored in DT9000.
R9001 to
R9003
Not used
-
R9004
I/O verification error
flag
Turns on when an I/O verification error occurs.
The position number of the I/O where the verification error
was occurred is stored in DT9010.
R9005,
R9006
Not used -
R9007
Operation error flag
(hold)
Turns on and keeps the on state shen an operation error
occurs.
The address where the error occurred is stored in DT9017.
(Indicates the first operation error which occurred).
R9008
Operation error flag
(non-hold)
Turns on for an instant when an operation error occurs.
The address where the operation error occurred is stored in
DT9018. The contents change each time a new error occurs.
R9009 Carry flag
Turns on for an instant,
- when an overflow or underflow occurs.
– when “1” is set by one of the shift instructions.
R900A > Flag
Turns on for an instant when the compared results become
larger in the “F60 (CMP) to F63 (DWIN) comparison
instructions.”
R900B = Flag
Turns on for an instant,
-
when the compared results are equal in the comparison
instructions (F60 to F63).
-
when the calculated results become 0 in the arithmetic
instructions.
R900C < Flag
Turns on for an instant when the compared results become
smaller in the “F60 (CMP) to F63 (DWIN) comparison
instructions.
R900D
Auxiliary timer
contact
Turns on when the set time elapses (set value reaches 0) in
the timing operation of the F137(STMR)/F183(DSTM)
auxiliary timer instruction.
It turns off when the trigger for auxiliary timer instruction
turns off.
R900E Tool port error flag
This turns on when an error occurs during communication
with a programming tool.
R900F
Constant scan error
flag Turns on when the scan time exceeds the time specified in
system register 34 during constant scan execution.
R9010 Always on relay Always on.
R9011 Always off relay Always off.
R9012 Scan pulse relay Turns on and off alternately at each scan.