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12
TROUBLESHOOTING
Number
Name
Cause of
SD81
error
SD150
SD151
SD152
I/O module
verify error
SD153
Table12.20 Special register
Meaning
• When a continuation error occurs, the corresponding bits are
all set to ON.
• Canceling the error, starting up the safety programmable
controller power or canceling the safety CPU module reset
after eliminating the cause of the error makes the bits go OFF.
Bit No.
Name of the cause
0
Instantaneous power failure
1
Battery low
2
Standard ROM write count excess
3
TEST MODE continuous RUN tolerance timeout
4
Scan timeout
5
Annunciator ON
6
Safety remote station detection error
Cause of error
Safety communication target station detection error
7
Safety remote station product information mismatch
Safety station product information mismatch
8
Initial monitoring timeout error
Safety monitoring timeout error
Error monitoring timeout error
9
Safety remote station data split error
Safety remote command error
Safety remote station link ID error
Safety remote station running number error
Safety remote station reception data error
Safety station reception data error
Safety connection setting error
10 to 15
Empty (fixed to 0)
• When an I/O module whose information is different from the
one registered at power-on is detected, the corresponding I/O
module number (in units of 16 points) is stored. (The I/O
module number set in parameter is stored if it is set.)
Bit pattern, in
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
units of 16
0
0
0
0
SD150
points,
indicating the
0
0
0
0
SD151
modules with
1
0
0
0
verify errors.
SD153
X Y
( )
3E0
0: No I/O verify
errors
If a module has more than 16 I/O points, the I/O module
1: I/O verify
number (in units of 16 points) corresponds to the start 16 I/O
error present
points turns on.
(Example) When a module with 64 I/O points is mounted in
slot 0, only b0 turns on when an error is detected.
• Not cleared even if the blown fuse is replaced with a new one.
This flag is cleared by error resetting operation.
Explanation
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
X Y
(
)
190
0
0
0
0
0
0
0
0
0
0
Indicates an I/O module verify error
12.7 Special Register List
Set by
Corresponding
(When set)
CPU
S (Error)
QS
1
0
( )
X Y
0
0
0
S (Error)
QS
0
0
12
9
10
11
12
- 90
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Table of Contents
Troubleshooting
