Omron CJ2 CPU UNIT SOFTWARE User Manual page 477

Increase in Cycle Time Caused by CPU Bus Units
Name
Controller Link CJ1W-CLK23
Unit
Serial Commu- CJ1W-SCU41-V1
nications Unit
CJ1W-SCU21-V1
CJ1W-SCU31-V1
CJ1W-SCU42
CJ1W-SCU32
CJ1W-SCU22
Ethernet Unit CJ1W-ENT11/21
EtherNet/IP CJ1W-EIP21
Unit
FL-net Unit CJ1W-FLN22
DeviceNet Unit CJ1W-DRM21
Analog Input CJ1W-ADG41
Unit
CJ2 CPU Unit Software User's Manual
Increase
Model
CJ2H
0.1 ms
0.20 ms
0.1 ms
0.1 ms
0.25 ms + No.
of data link
words × 1.6 µs
0.4 ms + 0.7 µs
for each allo-
cated word
0.12 ms
12 CPU Unit Cycle Time
CJ2M
0.2 ms The following additional time is required if data
links are used.
• CJ2H CPU Units: 0.1 ms + 0.7 µs × Number of
data link words
• CJ2M CPU Units: 0.1 ms + 1.2 µs × Number of
data link words
There will be an additional increase of the event
execution times when message services are
used.
There will be an increase of up to the following
time when a protocol macro is executed:
• CJ2H CPU Units: 0.4 µs × maximum number of
data words sent or received (0 to 500 words)
• CJ2M CPU Units: 0.6 µs × maximum number of
data words sent or received (0 or more words)
There will be an increase of the event execution
times when Host Links or 1:N NT Links are used.
0.9 ms If socket services are executed with software
switches, there will be an increase of up to the fol-
lowing time
• CJ2H CPU Units: 1.4 µs × Number of bytes
sent/received
• CJ2M CPU Units: 0.17 µs × Number of bytes
sent/received
There will be an increase in the event execution
times when FINS communications services,
socket services for CMND instructions, or FTP
services are performed.
Add the following value when tag data links are
used.
CJ2H CPU Units
0.1 ms + Number of words transferred × 0.33 µs*
CJ2M CPU Units
0.1 ms + Number of words transferred × 0.70 µs*
If the message service is used, the event execu-
tion time must also be added.
0.25 ms + No. The number of data link words is the number of
of data link words of data sent and received by a node. If the
words × 1.7 µs
message service is used, the event execution
time must be added separately.
0.4 ms + 0.4 µs
Include all words allocated to the slaves, including
for each allo- unused ones.
cated word
For message communications, add the number of
communications words to the calculations as the
left.
0.15 ms ---
Remarks
12-9
12