151
Determining the Error from the Status
Section 7-3
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.
0
0
1
0
0
0
0
0
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15
Device Error
Configuration Error
Channel Error
External RAM Error at Operation
Internal Communications Error
Not used.
Programless Link Error
Not used.
Not used.
Not used.
Not used.
Lower-level I/O Error
Not used.
Lower-level I/O Alarm
Not used.
Lower-level I/O Notification
0
0
0
0
0
0
0
0
C4/84 000B
C4/84 0000
C4/84 0401
Channel Status
Error Channel A Status
Device A Status
CH1
CH2
CH3
CH4
0
Bit 0
Bit 1
Bit 2
Bit 3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
CH13
CH14
CH15
CH16
1
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Channel Alarm Status
C4/84 0402
Not used.
Not used.
GT Error
Not used.
Not used.
Not used.
Control Type
Not used.
Not used.
Not used.
Not used.
Not used.
Basic Unit Error
Basic Unit Alarm
Not used.
RUN/STOP
Auto/Manual
GT or AT Execute/Cancel
Not used.
Input Error
Not used.
Alarm 1
Alarm 2
Alarm 3
Not used.
Not used.
Not used.
Not used.
Set Point Limiter Out of Range
Set Value Limiter Reverse Operation
MV Limiter Reverse Operation
Not used.
Summary of Contents for EJ1G
Page 3: ...iv ...
Page 17: ...xviii ...
Page 21: ...xxii ...
Page 53: ...32 Unit Configuration Examples Section 2 4 ...
Page 69: ...48 Changing SPs During Operation Section 3 3 ...
Page 81: ...60 Other Functions Section 4 5 ...
Page 145: ...124 Other HFU Functions Section 5 7 ...
Page 167: ...146 Detailed Description of Services Section 6 4 ...
Page 229: ...208 Parameters That Can Be Allocated for Programless Communications Appendix ...
Page 237: ......