Test/Commissioning/
Diagnostics
78
04/99 AWB 2700-1311 GB
Table 15: Description of the diagnostic bit (Not Ready)
DLK Diagnostics
Local
configuration
Error in the configuration of a local
expansion module; e.g. wrong/defective
LE 4
DMC Diagnostics
Memory card
Backup not present; the memory module is
defective or not present.
DBM Diagnostics
Battery module
The battery voltage is too low. Replace the
battery.
DAC Diagnostics
Power failure
Power supply failure
Code Meaning Description of the error
ENR Restart only with
retentive marker
reset
This message appears if you selected
“Halt” option under “Start after Not Ready”
in the PS 4-300 configuration and you
attempted a warm start after a category “E”
error occurred. In this situation you can only
restart with a retentive marker reset.
ERT Error Run-Time The PLC identified a run-time error; e.g.
array index violation.
EDR Error
Data Retention
Data retained in the operating system is
corrupted.
EPM Error
Program Module
Error in program memory; error identified in
the user program’s checksum.
EWD Error
Watch Dog
CPU failure; the CPU hardware watchdog
has indicated a failure.
EDC Error DC DC supply failure in the basic unit
ECT Error
Cycle Time
Cycle time violation; the maximum cycle
time set in the program was exceeded.
EHM Memory error The PLC’s memory is defective.
ECM Error CRC
Memory
The operating system is defective.
ECL Error Clock The real-time clock is defective.
ETR Error Timer The PS 4-300’s timer is defective.
Code Meaning Description of the error
H1311g.bk Seite 78 Freitag, 4. Juni 1999 1:12 13
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