12-12
12.1.2 Table of Special Internal Relays for FP
Σ
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.
WR900
Relay No.
Name
Description
R9000
Self-diagnostic error flag
Turns on when a self-diagnostic error occurs.
⇒
The content of self-diagnostic error is stored in
DT90000.
R9001
Not used
R9002
Not used
R9003
Not used
R9004
I/O verification error flag
Turns on when an I/O verification error occurs.
R9005
Backup battery error flag
(non-hold)
Turns on when an backup battery error occurs.
R9006
Backup battery error flag
(hold)
Turns on when a backup battery error occurs.
Once a battery error has been detected, this is held even
after recovery has been made.
It goes off if the power supply is turned off, or if the
system is initialized.
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
DT90017. (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 DT90018. The contents change each time a new error
occurs.
R9009
Carry flag
This is set if an overflow or underflow occurs in the
calculation results, and as a result of a shift system
instruction being executed.
R900A
> Flag
Turns on for an instant when the compared results become
larger in the comparison instructions.
R900B
= Flag
Turns on for an instant,
-
when the compared results are equal in the comparison
instructions.
-
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 comparison instructions.
R900D
Auxiliary timer
instruction flag
Turns on when the set time elapses (set value reaches 0) in
the timing operation of the F137(STMR)/F183(DSTM)
auxiliary timer instruction. The flag turns off when the
trigger for auxiliary timer instruction turns off.
R900E
Tool port
communication error
Turns on when communication error at tool port is occurred.
R900F
Constant scan error flag
Turns on when scan time exceeds the time specified in
system register 34 during constant scan execution.
This goes on if 0 has been set using system register 34.
Summary of Contents for FP E Series
Page 1: ......
Page 16: ......
Page 17: ...Chapter 1 Functions and Restrictions of the Unit ...
Page 28: ...1 12 ...
Page 29: ...Chapter 2 Specifications and Functions of the Unit ...
Page 37: ...2 9 Circuit diagram C32 Y0 Y1 Y3 Y4 C28 Y0 Y1 Y3 Y4 Y2 Y5 to YF Y2 Y5 to YB ...
Page 48: ...2 20 ...
Page 49: ...Chapter 3 Expansion ...
Page 56: ...3 8 Terminal layout diagram Note The numbers in the connector are for the first expansion ...
Page 61: ...Chapter 4 I O Allocation ...
Page 66: ...4 6 ...
Page 67: ...Chapter 5 Installation and Wiring ...
Page 90: ...5 24 ...
Page 91: ...Chapter 6 High speed counter Pulse Output and PWM Output functions ...
Page 116: ...6 26 ...
Page 121: ...6 31 ...
Page 125: ...6 35 Pulse output diagram ...
Page 131: ...6 41 ...
Page 139: ...6 49 ...
Page 141: ...6 51 ...
Page 144: ...6 54 Program Continued on the next page ...
Page 145: ...6 55 ...
Page 147: ...6 57 Program ...
Page 151: ...Chapter 7 Communication Cassette ...
Page 210: ...7 60 The values of DT50 and DT51 are written in DT0 and 1 of PLC ...
Page 238: ...7 88 ...
Page 239: ...Chapter 8 Self Diagnostic and Troubleshooting ...
Page 247: ......
Page 248: ......
Page 249: ...Chapter 9 Precautions During Programming ...
Page 260: ...9 12 Example 2 Using the CT instruction between JP and LBL instructions ...
Page 268: ...9 20 ...
Page 269: ...Chapter10 Specifications ...
Page 286: ......
Page 287: ...Chapter 11 Dimensions ...
Page 290: ...11 4 11 1 3 Expansion Unit FPG XY64D2T FPG XY64D2P FPG EM1 ...
Page 293: ...Chapter 12 Appendix ...
Page 297: ...12 5 ...
Page 437: ...12 145 12 7 ASCII Codes ...
Page 439: ......
Page 440: ......