Programming - Siemens SIMATIC S7-1500/ET 200MP CM PtP RS232 HF Manual

Programming

Overview of the instructions
Communication between the CPU, the communication module and a communication partner
takes place by means of special instructions and protocols that support the corresponding
communication modules. The instructions process the exchange of data between the CPU
and the communication module. They must be called cyclically from the user program. Data
transmission takes place asynchronously across several cycles.
The transmission protocols are implemented on the communication module. The protocol is
used to adapt the interface of the communication module to the interface of the
communication partner.
Instruction
Port_Config
Send_Config
Receive_Config
P3964_Config
Send_P2P
Receive_P2P
Receive_Reset
Signal_Get
Signal_Set
Get_Features
Set_Features
USS_Port_Scan
USS_Drive_Control
USS_Read_Param
USS_Write_Param
Modbus_Comm_Load
CM PtP RS232 HF (6ES7541‑1AD00‑0AB0) communication module
Manual, 01/2013, A5E03790665-01
Meaning
You use the Port_Config instruction to dynamically assign basic interface
parameters.
You use the Send_Config (send configuration) instruction to dynamically
assign serial send parameters of a port.
You use the Receive_Config (receive configuration) instruction to
dynamically assign serial receive parameters of a port.
You use the P3964_Config (protocol configuration) instruction to
dynamically assign the parameters of the 3964(R) procedure.
You use the Send_P2P instruction to send data to a communication partner.
You use the Receive_P2P instruction to receive data from a communication
partner.
You use the Receive_Reset instruction to delete the receive buffer of the
communication module.
You use the Signal_Get instruction to read the RS232 accompanying
signals.
You use the Signal_Set instruction to set the RS232 accompanying signals.
You use the Get_Features instruction to read expanded functions supported
by the communication module.
You use the Set_Features instruction to set expanded functions supported
by the communication module.
You use the USS_Port_Scan instruction to communicate via the USS
network.
You use the USS_Drive_Control instruction to exchange data with a drive.
You use the USS_Read_Param instruction to read parameters from the
drive.
You use the USS_Write_Param instruction to change parameters in the
drive.
The instruction Modbus_Comm_Load allows you to configure the port of the
communication module for Modbus RTU.
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