Siemens SIMATIC TI525 - Changes in Mode and Memory after Power up

EPROM/EEPROM OPERA TION
4-3
Hardware and Installation User Manual
Table 4-1 Changes in Mode and Memory After Power Up
Battery
Status
Programmed
EPROM or System
Memory
PLC
Mode
Conditions Results
Bad No Cleared PROGRAM
Present
Bad Yes Cleared
PLC executes
program in
EPROM/EEPROM
Good No No Change No Change
Good Yes No ChangeNo Change
RUN
Disabled for
10+ minutes
Yes
No
Cleared
525
PLC executes
program in
EPROM/EEPROM
RUN
Cleared PROGRAM
535
Checksum
Cleared PROGRAM
Errors Found:
No Checksum
No Change No Change
Errors Found:
No Checksum
Errors Found:
Checksum
Errors Found:
EEPROM
while power to
the PLC is of f.
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