VIPA System 300S SPEED7 CPU 313SC/DPM - Page 137

Manual VIPA System 300S SPEED7 Chapter 6 Deployment PtP communication
HB140E - CPU SC - RE_313-6CF03 - Rev. 07/45 6-15
The following text shortly illustrates the structure of programming a send
command for the different protocols.
3964R USS / Modbus
SFC 217
SER_SND
Busy ?
RetVal 8xxxh /
90xxh ?
RetVal 2001h ?
RetVal 2000h ?
N
N
N
Error evaluation
End
J
J
J
Data evaluation
End
N
J
SFC 217
SER_SND
Busy ?
RetVal 8xxxh /
90xxh ?
RetVal 2001h ?
RetVal 2000h ?
N
N
N
SFC 218
SER_RCV
Error evaluation
End
J
J
J
SFC 218
SER_RCV
Data evaluation
End
N
J
ASCII / STX/ETX
SFC 217
SER_SND
RetVal 900xh
Error evaluation
End
J
N
Principles of
programming