Determining The Error From The Status - Omron EJ1G User Manual

Determining the Error from the Status

7-3

Determining the Error from the Status

The EJ1G status can be checked by using communications to read the Sta-
tus.
Status is connected to other status data in a directory tree, so the cause of the
error can be checked or the channels for which there are alarms can be inves-
tigated by searching through the directory tree for the related status.
Example of Using Status Information for Troubleshooting
1. Read the Device A Status (C40000) for the HFU Unit.
C40000: 'H0004 (i.e., bit 2 is ON)
A channel error status bit is ON.
2. Read Error Channel A Status (C4000B).
C4000B: 'H0008 (i.e., bit 3 is ON).
An error or alarm has occurred for channel 4.
3. Read the Channel Status (C40401) and Channel Alarm Status (C40402)
of channel 4.
C40401: 'H0001 (i.e., bit 0 is ON)
Operation is stopped but there is no input error.
C40402: 'H0003 (i.e., bits 1 and 2 are ON)
Channel 4 alarms 1 and 2 are ON.
C4/84 0000
Device A Status
Bit 0 Device Error 0
0
Bit 1 Configuration Error
Bit 2 Channel Error 1
Bit 3
0
External RAM Error at Operation
Bit 4
Internal Communications Error 0
Bit 5 Not used.
0
Bit 6 Programless Link Error 0
Not used.
Bit 7
0
Not used.
Bit 8 0
Not used.
0
Bit 9
Not used.
Bit 10 0
Lower-level I/O Error
Bit 11 0
Not used.
Bit 12 0
0
Bit 13 Lower-level I/O Alarm
0
Bit 14 Not used.
Bit 15 0
Lower-level I/O Notification
C4/84 000B
Error Channel A Status
0
Bit 0 CH1
0
Bit 1 CH2
0
Bit 2 CH3
1
Bit 3 CH4
Bit 4 CH5
0
Bit 5
CH6 0
Bit 6 CH7 0
CH8 0
Bit 7
CH9
0
Bit 8
CH10 0
Bit 9
CH11
0
Bit 10
CH12
Bit 11 0
CH13
Bit 12 0
CH14
Bit 13 0
0
Bit 14 CH15
Bit 15
CH16
0
Section 7-3
C4/84 0401
Channel Status
1
Bit 0 RUN/STOP
0
Bit 1 Auto/Manual
GT or AT Execute/Cancel 0
Bit 2
Bit 3 Not used. 0
Bit 4 Control Type
0
Bit 5
Not used. 0
Bit 6 Not used. 0
Not used. 0
Bit 7
Bit 8 Input Error
0
Not used.
Bit 9 0
Not used.
Bit 10
0
Not used.
Bit 11
0
Bit 12 GT Error
0
Bit 13 Not used.
0
Bit 14 0
Not used.
Bit 15
0
Not used.
C4/84 0402
Channel Alarm Status
Alarm 1
Bit 0 1
1
Alarm 2
Bit 1
Alarm 3 0
Bit 2
Bit 3 Not used. 0
Bit 4
Not used.
0
Bit 5
Not used.
0
Not used.
Bit 6 0
Not used.
0
Bit 7
Bit 8 Not used. 0
0
Bit 9 Not used.
Bit 10 Basic Unit Error 0
0
Bit 11 Basic Unit Alarm
0
Bit 12
Set Point Limiter Out of Range
0
Bit 13
Set Value Limiter Reverse Operation
0
Bit 14
MV Limiter Reverse Operation
0
Bit 15 Not used.
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