4 -
15
4.
CPU MODULE
4.2
Parameter Setting Ranges
Parameter contents of the CPU module and parameter setting ranges are explained
below.
4.2.1
List of parameter setting range
Parameters are used for allocating the user memory area inside the CPU module, setting
various functions and device ranges.
Parameters are usually stored in the first 3k bytes of the user memory area.
In the parameters, the network parameter for MELSECNET/10 is allocated and stored
after the main sequence program area. (Refer to Section 4.2.2 for details.)
Parameters can be used with default values set in advance as shown below. These values
can be changed within the setting ranges by using the peripheral devices in accordance
with the intended use.
List of parameter setting range
Item
Default Value
Setting Range
Q02CPU-A, Q02HCPU-A
Q06HCPU-A
Main sequence program capacity
6k steps
1 to 28k steps
(1k step = in 2k-byte units)
1 to 30k steps
(1k step = in 2k-byte units)
Subsequence program capacity
–
–
1 to 30k steps
(in 1k-step unit)
File register capacity
–
0 to 8k points (1k point = in 2k-byte units)
Extension file register capacity
–
1 block = 16k bytes
(Block No.1 through No.8, and block No.10 through No.28 (when using a memory card) can be set.)
[Automatically setup in an empty area in a memory based on the file register setting.]
Comment capacity
–
0 to 4032 points (unit: 64 points = 1k byte)
[When comment capacity is set up, 1k byte is added to the memory area.]
Expanded comment capacity
–
0 to 3968 points (unit: 64 points = 1k byte)
Status latch
–
No parameter setting
Performed by setting up extension file registers to store devices and result in each of status
latch and sampling trace modes.
(Refer to the Type ACPU/QCPU-A (A Mode)(Fundamentals) Programming Manual.)
Sampling trace
–
Latch
range
setting
Link relay (B)
• Latch: L1000
to L2047 only
• None for
others
B0 to B1FFF (in 1-point unit)
Timer (T)
T0 to T255 (in 1-point unit)
T256 to T2047 (in 1-point unit)
Counter (C)
C0 to C255 (in 1-point unit)
C256 to C1023 (in 1-point unit)
Data register (D)
D0 to D8191 (in 1-point unit)
Link register (W)
W0 to W1FFF (in 1-point unit)
Settings for internal relay (M),
latch relay (L), step relay (S)
M0 to M999
M2048 to M8191
L1000 to L2047
None for S
M/L/S0 to M/L/S8191
(M, L, S are serial numbered.)