9. Program
●
Send/Receive message
Send message
Controller
Destination
device
**
**
Command data
**
**
**
Terminator
**
**
**
**
**
**
Receive message
(Response)
**
**
Response data
**
**
**
Terminator
**
**
**
**
**
**
Receive message
(Error response)
**
**
Response data (Error code)
**
**
**
Terminator
**
**
**
**
**
Header
Header
Header
●
Communications sequence
TCP communications are performed between the destination device (server) and the
Controller (client) in the following procedure.
Controller
(Client)
Accept
processing
Connection
established
Data receive
request
Data send
request
Next data
send request
Close
processing
Data receive
request
Next data
send processing
Data send
processing
Connection
established
Connection requested
Send data
Acknowledgement (ACK)
Send data
Acknowledgement (ACK)
Connect
processing
Close
processing
Connection
closed
Connection
closed
Destination
device
(Server)
33
Содержание V750 series
Страница 51: ...9 Program 2 Initialization processing 48...
Страница 52: ...9 Program 49...
Страница 53: ...9 Program 3 Connect processing 50...
Страница 54: ...9 Program 4 Send processing 51...
Страница 55: ...9 Program 5 Receive processing 52...
Страница 56: ...9 Program 53...
Страница 57: ...9 Program 6 Close processing 54...
Страница 58: ...9 Program 7 Processing number error process 55...
Страница 60: ...9 Program Program 57...
Страница 62: ...9 Program Program 59...
Страница 64: ...9 Program Program 61...
Страница 78: ...2013 0911 P543 E1 01...
