25
Battery Failure Flag The C200H-CPU31-E, unlike the other two CPU Unit models, has an additional
battery connected to the CPU Unit. A flag, assigned to the bits listed in the follow-
ing table, indicates where battery failure occurred (in the RAM Unit, EEPROM
Unit, or in the CPU Unit) and in which Unit.
Model Bit Function
C200H-CPU21-E/23-E 25308 Battery failure in RAM/EEPROM
Unit
C200H-CPU31-E 25308 Battery failure in RAM/EEPROM
Unit or CPU Unit
AR2404 Battery failure in CPU Unit
In the following table, the ON/OFF status of the bits indicate where battery failure
took place in the C200H-CPU31-E. For example, when bit 25308 is ON the bat-
tery in the CPU Unit failed.
25308 AR2404 Unit in which the battery failed
ON ON CPU Unit
ON OFF RAM/EEPROM Unit
Memory Units Section 2-6
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