Mitsubishi Electric Q Series Reference Manual page 233

7 APPLICATION FUNCTIONS
Instruction 1
Instruction 2
being
executed
Transmission
completion
Instruction 2
Instruction 1
being
executed
Transmission
completion
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(Example 1) When using the same channel with multiple instructions
One network module has 8 channels for executing instructions.
Although these channels can be used at the same time, the same
channel cannot be concurrently used for multiple instructions.
If execution of multiple instructions are attempted at the same time on the
same channel, those to be executed later have to wait. For this reason,
create a program so that a flag turns on until the previous instruction is
completed, as shown below.
Processing program at transmission completion of instruction 1
Processing program at normal completion of instruction 1
Processing program at abnormal completion of instruction 1
Processing program at transmission completion of instruction 2
Processing program at normal completion of instruction 2
Processing program at abnormal completion of instruction 2
MELSEC-Q
With arrival confirmation/
clock data setting
Channel used by the host = 1
Target station storage channel = 2
Target station network number = 7
Target station number = 2
Number of resends = 5
Arrival monitoring time = 20
Transmission data length = 2
Transmission data
Transmission
With arrival confirmation/clock data
setting
Channel used by the host = 1
Target station storage channel = 3
Target station network number = 8
Target station number = 3
Number of resends = 5
Arrival monitoring time = 20
Transmission data length = 2
Transmission data
Transmission
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