Omron CJ - 09-2009 Operation Manual page 513

Computing the Cycle Time
Name
CompoNet Master CJ1W-
Unit CRM21
CompoBus/S Mas- CJ1W-
ter Unit SRM21
Note
Increase in Cycle Time
Caused by CPU Bus Units
Name Model
Controller Link CJ1W-
Unit CLK21(V1)
Serial Commu- CJ1W-SCU41-V1
nications Unit
CJ1W-SCU21-V1
CJ1W-SCU31-V1
Ethernet Unit CJ1W-ETN11/21
Model
CJ1-H-R
Communica- 0.142 ms
tions mode
No. 0
Communica- 0.155 ms
tions mode
No. 1
Communica- 0.183 ms
tions mode
No. 2
Communica- 0.215 ms
tions mode
No. 3
Communica- 0.091 +
(0.0012 × No.
tions mode
No. 8 of words allo-
(See note 2.) cated) ms
Assigned 1 0.10 ms
unit number
Assigned 2 0.11 ms
unit numbers
1. CJ1M Low-end CPU Units: CJ1M-CPU11/21.
2. The number of words allocated is the actual number of words allocated in
the I/O memory areas for all slaves.
The increase in the cycle time will be the I/O refresh times from the following
table plus the refresh time required for specific Unit functions.
Increase
CJ1-H: 0.1 ms
CJ1M: 0.15 ms
CJ1: 0.2 ms
CJ1-H: 0.22 ms
CJ1M: 0.24 ms
CJ1: 0.25 ms
CJ1-H: 0.1 ms
CJ1M: 0.17 ms
CJ1: 0.25 ms
I/O refresh time per Unit
CJ1-H
CJ1H-H: 0.156 ms Low-end: 0.256 ms
CJ1G-H: 0.189 ms (See note 1.)
Other: 0.233 ms
CJ1H-H: 0.178 ms Low-end: 0.267 ms
CJ1G-H: 0.211 ms (See note 1.)
Other: 0.256 ms
CJ1H-H: 0.189 ms Low-end: 0.289 ms
CJ1G-H: 0.233 ms (See note 1.)
Other: 0.267 ms
CJ1H-H: 0.244 ms Low-end: 0.367 ms
CJ1G-H: 0.289 ms (See note 1.)
Other: 0.322 ms
CJ1H-H: 0.106 + Low-end: 0.166 +
(0.0012 × No. of (0.0016 × No. of
words allocated) ms words allocated)
CJ1G-H: 0.109 + ms (See note 1.)
(0.0014 × No. of
Other: 0.100 +
words allocated) ms
(0.0016 × No. of
words allocated)
ms
0.12 ms 0.15 ms
0.13 ms 0.17 ms
Remarks
There will be an increase of 0.1 ms + 0.7 µs × number of
data link words for CJ1-H and CJ1M CPU Units and 1.5 ms
+ 1 µs × number of data link words for CJ1 CPU Units.
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:
CJ1-H and CJ1M CPU Units: 0.7 µs × maximum number of
data words sent or received (0 to 500 words)
CJ1 CPU Units: 1 µs × maximum number of data words
sent or received (0 to 500 words)
There will be an increase of the event execution times
when Host Links or 1:N NT Links are used.
If socket services are executed with software switches,
there will be an increase of 1.4 µs × the number of bytes
sent/received for CJ1-H and CJ1M CPU Units and 2 µs ×
the number of bytes sent/received for CJ1 CPU Units.
There will be an increase in the event execution times
when FINS communications services, socket services for
CMND instructions, or FTP services are performed.
Section 10-4
CJ1M CJ1
0.200 ms
0.256 ms
0.300 ms
0.322 ms
0.154 +
(0.0022 × No.
of words allo-
cated) ms
0.15 ms
0.17 ms
465