Overflow/Underflow Errors - Omron CJ1W-CT021 Operation Manual

Error codes
Error Code 1 Error Code 2
0420 Counter
No.
0430 Counter
No.
0431 Counter
No.
0435 Counter
No.
Clearing IOWR-instruction
errors
5-2-3

Overflow/Underflow errors

Error Code 1 Error Code 2
0450 Counter No.
0460 Counter No.
Clearing overflow/
underflow errors
Error
Range Invalid
No. Range Limits
Range Invalid
No. Range Limit(s) /
(BCD) Comparison Value
/
CV No.
(BCD)
CV No. Comparison Values
(BCD) are equal
000 Rate Ranges overlap For the Counter with the Counter Number as
IOWR-instruction errors can be cleared by issuing the IOWR-instruction with the
Error Clear ("EC") command (refer to 4-5-3-5 "Error Clear Command" for more
information).
Over- and underflow errors are reported only for Linear Counters assuming that
they have been configured to generate error codes (refer to 3-2-3 "Linear Coun-
ter").
Error
Overflow
Underflow
Overflow- and underflow errors can be cleared by resetting or presetting the
Counter that generated over- or underflow. To reset a Counter refer to 3-6 "Reset
Signals". To preset a Counter refer 3-4 "Digital Input Functions".
Description
Upper Range Limit < Lower Range Limit.
Counter No. indicates the Linear Counter
number and Range No. indicates the Range
number.
If the Unit is in Range Mode: Lower and/or
Upper Range Limit is/are outside Counting
Range. Counter No. indicates the Counter
number and Range No. indicates the Range
number.
If the Unit is in Comparison Mode: Comparison
value is outside Counting Range. Counter No.
indicates the Counter number and CV No.
indicates the Comparison Value number.
(The counting range of Circular and Linear
Counters can be specified, refer to 3-2-2
"Circular Counter" and 3-2-3 "Linear Counter"
for more information).
For the Counter with the Counter Number as
reported in Error Code 2 one or more
Comparison Values are equal. CV No.
indicates the Comparison Value number.
reported in Error Code 2 the Rate Ranges 0
and 1 overlap each other.
Description
The Linear Counter with the Counter No. as
reported in Error Code 2 generated overflow.
The Linear Counter with the Counter No. as
reported in Error Code 2 generated underflow.
Section 5-2
139