FC6A S
ERIES
MICROS
MART
U
SER
’
S
M
ANUAL
FC9Y-B1722 5-67
5: F
UNCTIONS
AND
S
ETTINGS
General Errors Related to the Battery
When the power is turned on with a battery that is almost dead or without a battery, a keep data error and a clock error will occur.
Keep Data Error
When the power is turned off with a battery that is almost dead or without a battery, the data that is supposed to be backed up in
RAM (keep data) cannot be backed up. A keep data error will occur and the keep data will be cleared in the following case:
The status of keep data when the power supply was turned on has changed from when the power supply was previously turned off
Clock Error
When the power is turned off with a battery that is almost dead or without a battery, the clock data cannot be backed up. A clock
error will occur and the clock data will be initialized in either of the following cases:
Battery Voltage (D8056) measured when the power supply is turned ON is less than 2000
*1
A keep data error occurs
*2
*1 Applicable to the following versions. For versions before the following versions, the clock error will occur when Battery Voltage (D8056) is less
than 2300.
All-in-One CPU module: Version 2.10 and higher
CAN J1939 All-in-One CPU module: Version 2.10 and higher
Plus CPU module: Version 1.00 and higher
*2 Applicable to the following versions. For versions before the following versions, a clock error caused by a keep data error will not occur.
All-in-One CPU module: Version 2.10 and higher
CAN J1939 All-in-One CPU module: Version 2.10 and higher
Plus CPU module: Version 1.50 and higher