232
8-5. System Registers
2. Table of System Registers
Note:
•
*
This function is available for C24, C40, C56, and C72 series with CPU version 2.7 or later. (All C24,
C40, C56, and C72 series with a suffix “B” on the part number have this function.)
Address
0
4
5
6
Name of system register
Program capacity
Operation without backup
battery
*
Counter instruction
starting address
Hold area starting
address settings for
timer/counter area
Default
value
K1, K3,
or K5
K0
K100
K100
Description
The program capacity is automatically specified according
to the type of the programmable controller
C14/C16 series (900 steps): K1
C24/C40 series (2,720 steps): K3
C56/C72 series (5,000 steps): K5
The value in this system register is fixed.
This register specifies the ERR. LED status of the FP1
when the voltage of the backup battery lowers or when the
backup battery disconnects.
K0: the conditions above are regarded as errors
K1: the conditions above are not regarded as errors
Starting number for counter instructions is specified.
• Setting range
C14/C16 series:
C24/C40/C56/C72 series:
• Setting the same value as system register 6 is
recommended.
• If the maximum value of the setting range is input, all of
the areas are used as timers.
EXAMPLE:
If the system register 5 of C16 series is set to K110:
- Timers:
- Counters:
Hold area starting address for timer/counter is specified.
• Setting range
C14/C16 series:
C24/C40/C56/C72 series:
• Setting the same value as system register 5 is
recommended.
• If the maximum value of the setting range is input, all of
the areas are used as non-hold areas.
EXAMPLE:
If system register 6 of C16 series is set to K110:
- Non-hold area:
- Hold area:
K0 to K128
K0 to K144
K0 to K128
K0 to K144
T0 to T109 (110 timers)
C110 to C127 (18 counters)
0 to 109
110 to 127
Summary of Contents for FP1
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