Siemens Simatic S7-1500 - Page 76

A5E33284667-AF Page 75
Extended instructions
Basic instructions
Communication
Technology
S7-300
S7-400
S7-1200 S7-1500
Description LAD/FBD
STL
(not S7-1200)
SCL
✔
Read out parameters from the drive
USS_RPM
✔
✔
✔
✔
Read data from drive (16 drives)
USS_Read_Param
✔
Read data from drive (31 drives)
USS_Read_Param_31
✔
Change parameters in the drive
USS_WPM
✔
✔
✔
✔
Change data in drive (16 drives)
USS_Write_Param
✔
Change data in drive (31 drives)
USS_Write_Param_31
MODBUS (RTU)
S7-300/400: Commands for ET200SP CM PtP
✔
✔
✔
✔
Configure communication module for Modbus
Modbus_Comm_Load
✔
✔
✔
✔
Communicate as Modbus master
Modbus_Master
✔
✔
✔
✔
Communicate as Modbus slave
Modbus_Slave
Instructions with lower memory requirements, but also less
functional scope.
Recommendation: Use the instructions
specified above. You cannot apply the
instructions decentrally with a CM or in an
ET 200.
✔
Configure port on the PtP module for Modbus RTU
MB_COMM_LOAD
✔
Communicate via the PtP port as Modbus master
MB_MASTER
✔
Communicate via the PtP port as Modbus slave
MB_SLAVE