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Modifying and transferring
standard system protocols
Modified standard
system protocol
Command execution (SEND, RECV, SEND&RECV)
RS-232C or RS-422A/485
General-purpose external device
CPU Unit
Sequence
number
I/O memory
Sequence No.
specification
I/O refreshing
Shared memory
Step 0
Messages
Serial Communications Board or Unit
Step 1
Step 2
Creating and transferring a new protocol
Newly created protocol
CPU Unit
Sequence
number
I/O memory
Sequence No.
specification
I/O refreshing
Shared memory
Step 0
Messages
Serial Communications Board or Unit
General-purpose external device
RS232C or RS-422A/485
Step 1
Step 2
Command execution (SEND, RECV, SEND&RECV)
Summary of Contents for CJ1W-SCU41
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