Omron SYSMAC CS1D-PD Series Operation Manual page 636

Precautions in Replacing CS1-H PLCs with CS1D PLCs
Item
Perfor- System overhead
mance time
Instruction Execu-
tion Times
Increase in cycle
time for duplex ini-
tialization
Increase in cycle
time for online edit-
ing
CPU execution
modes
596
Duplex CPU Systems
1.9 ms
Refer to 9-5 Instruction Exe-
cution Times and Number of
Steps.
The cycle time will be
increased for any cycle in
which duplex initialization is
required. Refer to SECTION
9 CPU Unit Operation and the
Cycle Time for details. Set
the maximum cycle time in
consideration of this increase.
Approximately 8 ms, but
duplex initialization is
required after online editing
(see above).
Only the normal execution
mode is supported.
Single CPU Systems
0.5 ms (normal mode)
0.4 ms (Parallel Processing Mode)
Refer to 9-5 Instruction Execution
Times and Number of Steps.
---
(There is no need to consider the
time required for duplex initializa-
tion.)
Approx. 8 ms
(No precautions in converting from
the CS1-H.)
No precautions in converting from
the CS1-H.
Appendix E
CS1-H (See note.)
0.3 ms (normal
mode on CS1-H)
0.2 ms (Parallel
Processing Mode
on the CS1-H)
0.5 ms (CS1)
---
---
CS1-H CPU Units:
Approx. 8 ms
(CHU6@)
The CS1-H also
supports Parallel
Processing and
Peripheral Servicing
Priority Modes.