Siemens SIMATIC S7-1200 - Page 79

A5E33284667-AA Page 78
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200 S7-1500
Description LAD/FBD
STL
(not S7-1200)
SCL
ET 200S serial interface
Note: S stands for serial
✔
✔
✔
Receive data
S_RCV
✔
✔
✔
Send data
S_SEND
✔
✔
✔
Read accompanying signals at the RS 232 interface
S_VSTAT
✔
✔
✔
Write accompanying signals at the RS 232C interface
S_VSET
✔
✔
✔
Set data flow control using XON/XOFF
S_XON
✔
✔
✔
Set data flow control using RTS/CTS
S_RTS
✔ ✔ ✔
Configure data flow control via automatic Configure
operation of the RS 232C accompanying signals
S_V24
✔
✔
✔
Modbus slave instruction for ET 200S 1SI
S_MODB
✔
✔
✔
Send data to a USS slave
S_USST
✔
✔
✔
Receive data from a USS slave
S_USSR
✔
✔
✔
Initialize USS
S_USSI
SIMATIC NET CP
Open User Communication
✔ ✔
Passes data to the CP for transfer via a configured
connection
AG_SEND
✔
✔
Passes jobs to the CP for accepting received data
AG_RECV
✔
✔
Locks data exchange via a connection with FETCH/WRITE
AG_LOCK