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73
Handling Errors and Alarms
Section 2-8
CIO word. These alarm flags will turn OFF when the error is cleared and the
Unit is restarted, or the Special I/O Unit Restart Bit is turned ON and then
OFF again.
Note
These alarms are output in CIO word n+9 for CS1W-AD041-V1 and CS1W-
AD081-V1, and in CIO word n+19 for CS1W-AD161.
2-8-3
Errors in the CPU Unit
When errors occur in the CPU Unit or I/O bus, and I/O refresh with the Special
I/O Unit is not performed correctly resulting in the Analog Input Unit malfunc-
tioning, the ERH indicator will be lit.
ERH and RUN Indicators: Lit
The ERH and RUN indicators will be lit if an error occurs in the I/O bus caus-
ing a WDT (watchdog timer) error in the CPU Unit, resulting in incorrect I/O
refresh with the Analog Input Unit.
Turn ON the power supply again or restart the system.
For further details, refer to
CS-series CS1G/H-CPU
@@
-EV1, CS1G/H-
CPU
@@
H Programmable Controllers Operation Manual (W339)
.
Note
No error will be detected by the CPU Unit or displayed on the Programming
Console, because the CPU Unit is continuing operation.
ERH Indicator: Lit, RUN Indicator: Not Lit
Word n+9/n+19
(See note.)
Alarm flag
Error contents
Input status
Countermeasure
Bit 11
Mean Value
Processing Set-
ting Error
The wrong number of samplings
has been specified for mean
processing.
Conversion
does not start
and data
becomes 0000.
Specify a number from 0000 to
0006.
Bit 12
Conversion
Time/Operation
Mode Setting
Error
The setting for conversion time/
resolution is incorrect.
Conversion
does not start
and data
becomes 0000.
Specify 00 or C1.
RUN
ERC
ERH
: Lit
: Not lit
Error
Error contents
Input status
I/O bus error
Error has occurred during data
exchange with the CPU Unit.
Conversion data becomes 0000.
CPU Unit monitoring error (see
note)
No response from CPU Unit dur-
ing fixed period.
Maintains the condition existing
before the error.
CPU Unit WDT error
Error has been generated in
CPU Unit.
Changes to undefined state.
RUN
ERC
ERH
: Lit
: Not lit
Summary of Contents for CJ1W-AD041-V1
Page 3: ...iv...
Page 5: ...vi...
Page 9: ...x TABLE OF CONTENTS...
Page 15: ...xvi...
Page 99: ...76 Handling Errors and Alarms Section 2 8...
Page 191: ...168 Handling Errors and Alarms Section 4 8...
Page 243: ...220 Handling Errors and Alarms Section 5 8...
Page 381: ...358 Handling Errors and Alarms Section 7 10...
Page 385: ...362 Dimensions Appendix A...
Page 395: ...372 Sample Programs Appendix B...
Page 396: ...373 Appendix C Data Memory Coding Sheets...
Page 417: ...394 Data Memory Coding Sheets Appendix C...
Page 425: ......