S7-300
S7-400
S7-1200
S7-1500
Description LAD/FBD
STL
(not S7-1200)
SCL
Note: S stands for serial
Read accompanying signals at the RS 232 interface
Write accompanying signals at the RS 232C interface
Set data flow control using XON/XOFF
Set data flow control using RTS/CTS
Configure data flow control via automatic Configure
operation of the RS 232C accompanying signals
Modbus slave instruction for ET 200S 1SI
Receive data from a USS slave
Passes data to the CP for transfer via a configured
connection
Passes jobs to the CP for accepting received data
Locks data exchange via a connection with FETCH/WRITE