11
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11.1 Scan Time
11.1.3 Factors that increase the scan time
11
CPU MODULE PROCESSING TIME
(11)Program memory batch transfer
When executing the program memory batch transfer by GX Developer, the processing
time shown in Table11.30 is generated.
Note17
(12)Redundant power supply system diagnostics
Note18Note19Note20
When the "Diagnose redundant power supply system" checkbox is checked on the
PLC RAS tab of PLC parameter in GX Developer, processing time shown in
Table11.31 is required.
* 1 : Power supply error indicates any of the following.
• Redundant power supply module failure
• Power supply for the redundant power supply module OFF
• Redundant power supply module not mounted
Table11.30 Scan time prolonging time when transferring data from program cache memory to
program memory
CPU Module
Scan time prolonging time
Q02UCPU
4.2ms
Q03UDCPU, Q03UDECPU
4.0ms
Q04UDHCPU, Q06UDHCPU, Q13UDHCPU, Q26UDHCPU,
Q04UDEHCPU, Q06UDEHCPU, Q13UDEHCPU, Q26UDEHCPU
3.8ms
Note17
Note18
Note19
Note20
Table11.31 Scan time increased when redundant power supply system diagnostics is set
CPU module
Processing time
With power supply error
*1
Without power supply
error
*1
Q02UCPU
0.09ms
0.09ms
Q03UDCPU, Q04UDHCPU, Q06UDHCPU,
Q13UDHCPU, Q26UDHCPU, Q03UDECPU,
Q04UDEHCPU, Q06UDEHCPU,
Q13UDEHCPU, Q26UDEHCPU
0.043ms
0.052ms
Basic
High
Performance
Process
Note11.16 Note11.16
Note11.16
Redundant
Note11.16
Since the Basic model QCPU, High Performance model QCPU, Process CPU, and Redundant
CPU do not use the program cache memory, processing time required for transferring data from
a program cache memory to a program memory can be ignored.
Basic
High
Performance
Process
Redundant
Note11.17
High
Note11.18
Note11.18 Note11.18
Note11.19
Universal
UD
Since the Basic model QCPU does not execute the redundant power supply system diagnostics,
it is not necessary to be conscious of the processing time.
Basic
It is not necessary to be conscious of the processing time during the redundant power supply
system diagnostics in the High Performance model QCPU, Process CPU, and Redundant CPU.
High
Performance
Process
Redundant
When setting the redundant power supply system diagnostics in the Universal model QCPU,
check the versions of CPU module and GX Developer. (
Universal
UD