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214
10-1 Error Indicators
The error indicators are located on the front of MC Unit, as shown in the following
diagram.
MC221
RUN
ERR
X CCW
Y CCW
X CW
Y CW
RUN
ERR XCCW XCW YCCW YCW
Error
Error Processing
OFF
OFF
OFF
OFF
OFF
OFF
Watchdog timer
timeout error
I/O table verification
error
The MC Unit’s watchdog timer has timed out.
Replace the MC Unit.
Create an I/O table and try again.
ON
OFF
ON/
OFF
ON/
OFF
ON/
OFF
ON/
OFF
No error
---
ON
ON
OFF
OFF
OFF
OFF
MC Unit error
An error has occurred in the MC Unit itself.
Check details of the error with the PC, Teaching
Box, or MC Support Software.
ON
ON
ON
OFF
OFF
OFF
EEPROM error
An error has occurred in EEPROM, the MC
Unit or in the MC Unit’s RAM Replace the MC
ON
ON
OFF
ON
OFF
OFF
RAM error
Unit, or in the MC Unit’s RAM. Replace the MC
Unit.
ON
ON
OFF
OFF
ON
OFF
CPU error
Replace the MC Unit.
Note
For error codes larger than 1000 that might occur while using the MC Support
Software, refer to
Section 18 Error Processing
of the
MC Support Software
Operation Manual (W256)
.
Refer to
Sections 10-2
to
10-4
for details about the error codes. The first error
code will be output to the n+9 words of the work area.
Error Indicators
Section 10-1
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