Mitsubishi QJ71GP21-SX, Reference Manual

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6
- 37 6.4 Refresh Parameters
6.4.2 Change of transfer target CPU-side device
6
PARAMETER SETTING
6.4.2 Change of transfer target CPU-side device
When LB/LW transfer data exceeds the B/W capacity (8K points) of the CPU module,
changing the B/W capacity or changing the transfer target CPU-side device to any other
than B/W is needed.
The following is an example of CPU-side device setting for 32K-point LB and 128K-point
LW data transfer.
POINT
For the Basic model QCPU or a safety CPU, refresh only the LB/LW that is used
for the CPU module because the B/W capacity of the CPU module (2K points) is
too small.
Section 6.4.1 (1)(d) Refresh parameters of a Basic model QCPU or safety
CPU station
(1) When using the extended link register (W) as a transfer target of LW
(Universal model QCPU only)
* 1 The extended link register (W) is a device using the file register area.
For details, refer to the following manual.
QCPU User's Manual (Function Explanation, Program Fundamentals), Extended data
register (D), Extended link register (W)
* 2 The file register capacity differs for each CPU module.
For capacity of each CPU module, refer to the following manual.
QCPU User's Manual (Function Explanation, Program Fundamentals), File registers
* 3 Check the serial No. and software version for applicability.
Appendix 3 Functional Upgrade of CC-Link IE controller network
* 4 Processing time differs depending on the storage location.
A large number of processing points will cause a longer sequence scan time.
POINT
(1) It is convenient to use the following devices as target CPU-side devices of
transfer from LW.
• When the transfer range value is 8K (1FFF
H
) or less: Link register (W)
• When the transfer range value is more than 8K (1FFF
H
): Extended link
register (W)
(2) When using a file register as a transfer target CPU-side device of LW, refer to
the following.
(2) When using a file register as an LW transfer destination (Except for
Q00JCPU and QS001CPU) in this section
Table 6.17 CPU-side device setting example
Link-side device CPU-side device CPU-side device setting method
LW0 to 1FFFF W0 to 1FFFF
• Register a 128K-point extended link register (W) to the
standard RAM or a memory card (RAM).
*1 *2 *3 *4
• Change the link register (W) points from 8K to 0K.
LB0 to 7FFF B0 to 7FFF • Change the link relay (B) points from 8K to 32K.