SIEMENS S7-1413 Communication Software Architecture and Application Detailed Explanation

System Requirements and Configuration Guidelines

1. Hardware requirements

Computer: PC or PG that supports CP 1413.

Network adapter: SIMATIC NET CP 1413 must be used.

Network components: industrial Ethernet compatible transceivers, cables, connectors, etc.

2. Software requirements

Operating system: Microsoft Windows 95 or Windows NT 4.0 and above.

Configuration tool: COML S7 (Configuration Management Local) is used for setting communication parameters.

Development environment: A development platform that supports C language compilers (such as Microsoft Visual C++).

3. User skill requirements

Application users: need to be familiar with PC operation and basic functions of SIMATIC S7 system.

Developers: In addition to the above knowledge, they need to master C programming language and understand the basic principles of network communication.

Example of Application Deployment and Communication Process

1. Typical deployment steps

Hardware installation: Insert CP 1413 into the ISA slot of the PC and connect the industrial Ethernet cable.

Software installation: Install the S7-1413 driver and configuration tool.

Network configuration: Use COML S7 to set the address, communication protocol, and service access point (TSAP) for this site.

Program development: Write application logic based on SAPI S7 or SEND/RECEIVE interfaces.

Testing and debugging: Use the tracking function and sample program to verify the correctness of communication.

2. SAPI S7 communication process (taking reading variables as an example)

Call S7_Create to create a communication instance.

Establish a connection with the S7 PLC using S7_Connect.

Read variables from a specified data block using S7_ ReadVar.

Process the returned data and, if necessary, use S7_SriteVar to write the data.

After communication, call S7_Disconnect and S7_Destroy to release resources.