Omron CQM1H-SCB41 Operation Manual page 92

Protocol Structure
One protocol
Sequence No. 000 to 999
(60 sequences max./protocol)
Transmission
control parameter
Link word setting
Send/receive
processing
monitoring time
Response
notification method
15 steps max.
Message list (See note 2.)
Send message list
Header Address Data Check
Receive message list
Header Address Data Check
Reception matrix list (See note 2.)
Reception matrix
Case No. 15
Case No. 00
Receive message
Sequence Parameters
Depending on the response received, the user can either choose to resend
the same send message (retry processing), or to perform the next process
(for example, read the process value for a Temperature Controller with a dif-
ferent address).
Step 0
Step 0
Step 1
Step 1
15 steps max.
Terminator
Terminator
Next process
Note 1. The SEND, RECEIVE, or SEND&RECEIVE commands can be used.
2. Three types of reception matrix are available for switching the processing,
depending on whether the messages are send messages, receive (wait)
messages, or multiple receive (wait) messages. Unlike sequences, these
matrixes are managed as lists.
3. Retries are possible on for the SEND&RECEIVE command.
Parameter
Transmission control parameters Control methods, such as flow control
Link words
Monitoring time
Response notification method
One-step structure
With the SEND, RECEIVE, or
SEND&RECEIVE command
Command (See note 1.)
Messages (See note 2.)
Normal end
N (error)
Repeated
Y
N (no)
Next process
Next step
To specified step
Sequence end
Sequence interrupt
Settings for shared words between the PC and
the Serial Communications Board.
Monitoring time for send/receive processing
Timing for writing received data to I/O memory in
the PC
Section 5-5
(See
Y
note 3.)
Retry?
N (no)
Error processing
Meaning
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