6
PREPARATORY PROCEDURES AND SETTING
6.7 Specifications, Installation, and Replacement of the Battery
6.7.3 Battery replacement
6 - 51
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
FUNCTIONS
5
ACCESS VIA NETWORK
MODULES
6
PREPARATORY
PROCEDURES AND
SETTING
7
I/O NUMBER
ASSIGNMENT
8
MEMORIES AND FILES
(2) Service life of the C Controller module battery
The following indicates the service life of the C Controller module batteries.
* 1 The power-on time ratio indicates the percentage of power-on time per day (24 hours).
(The power-on time ratio is 50% when the total power-on time is 12 hours and the total power-off or
reset time is 12 hours.)
* 2 The guaranteed value represents a battery life at 70 , which is calculated based on characteristic
values of manufacturer-supplied memories (SRAM) and on the assumption of storage within the
ambient temperature range of -25 to 75 (operating ambient temperature of 0 to 55 ).
* 3 The actual service value (reference value) represents a battery life that is calculated based on the
values measured at storage ambient temperature of 40 . This value is intended for reference
only, as it varies with characteristics of the memory.
* 4 The guaranteed time after power off or during reset is 3 minutes in the following cases:
• The battery connector is disconnected.
• The battery lead wire is broken.
Table 6.17 Battery life
C Controller
module
Power-on
time ratio
*1
Battery life
Q6BAT Q7BAT
Guaranteed
value
*2
Actual service
value
(Reference
value)
*3
Guaranteed
time after
battery error
occurrence
*4
Guaranteed
value
*2
Actual service
value
(Reference
value)
*3
Guaranteed
time after
battery error
occurrence
*4
Q12DCCPU-V
0%
13,700 hours
1.57 years
39,000 hours
4.45 years
600 hours
25 days
37,100 hours
4.25 years
43,800 hours
5 years
600 hours
25 days
30%
19,100 hours
2.18 years
43,800 hours
5 years
600 hours
25 days
43,800 hours
5 years
43,800 hours
5 years
600 hours
25 days
50%
25,800 hours
2.96 years
43,800 hours
5 years
600 hours
25 days
43,800 hours
5 years
43,800 hours
5 years
600 hours
25 days
70%
40,000 hours
4.57 years
43,800 hours
5 years
600 hours
25 days
43,800 hours
5 years
43,800 hours
5 years
600 hours
25 days
100%
43,800 hours
5 years
43,800 hours
5 years
600 hours
25 days
43,800 hours
5 years
43,800 hours
5 years
600 hours
25 days
Q06CCPU-V,
Q06CCPU-V-B
0%
18,000 hours
2.05 years
43,800 hours
5 years
1,100 hours
45 days
For the Q06CCPU-V(-B), the Q7BAT cannot be
used.
30%
25,714 hours
2.93 years
43,800 hours
5 years
1,100 hours
45 days
50%
36,000 hours
4.10 years
43,800 hours
5 years
1,100 hours
45 days
70%
43,800 hours
5 years
43,800 hours
5 years
1,100 hours
45 days
100%
43,800 hours
5 years
43,800 hours
5 years
1,100 hours
45 days
IMPORTANT
If a battery is not replaced after the battery error, data in the standard RAM, standard
ROM being accessed, or battery-backed-up RAM and/or clock data may be corrupted, or
a file system error may occur.
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