Omron CVM1-CLK21, Operation Manual

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136
Using the Message Service Section 6-3
Simultaneous Execution of Communications Instructions
C200HX/HG/HE PCs CS/CJ-series, CVM1, and CV-series PCs
Operating
level #0
Operating
level #1
Instruction 1
Instruction 2
Instruction 3
Instruction 4
Instruction 5
Instruction 6
Instruction 7
Instruction 8
There is only one communications port per operat
ing level, so no more than one communications
instruction can be executed per operating level at
one time. When both operating levels are used, two
instructions can be executed simultaneously. There are eight communications ports, so eight
communications can be executed simulta
neously. 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.
Controller Link Unit
CPU Unit
Port
Controller Link Unit
CPU Unit
Port
Port
Instruction 1
Instruction 2
CQM1H-series PCs
There is only one communications port, so no more
than one communications instruction can be
executed at one time.
Controller Link Unit
CPU Unit
Port
Instruction 1