Omron C200HW-CLK21 Operation Manual page 216

Using the Message Service
Simultaneous Execution of Communications Instructions
C200HX/HG/HE PLCs
Controller Link Unit
Operating
level #0
Operating
level #1
There is only one communications port per operat-
ing level, so no more than one communications in-
struction can be executed per operating level at
one time. When both operating levels are used, two
instructions can be executed simultaneously.
CQM1H-series PLCs
Controller Link Unit
Port
There is only one communications port, so no more
than one communications instruction can be
executed at one time.
CPU Unit
Port
Instruction 1
Instruction 2
Port
CPU Unit
Instruction 1
CS/CJ-series, CVM1, and CV-series PLCs
Controller Link Unit
CPU Unit
Port
There are eight communications ports, so eight
communications can be executed simultane-
ously. Only one message is refreshed from the
CPU Unit to the Controller Link Unit and one
from the Controller Link Unit to the CPU Unit
for each CPU Bus Unit service time.
Section 6-3
Instruction 1
Instruction 2
Instruction 3
Instruction 4
Instruction 5
Instruction 6
Instruction 7
Instruction 8
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