Regarding Code & Video Access - S7-200 to Woodward MFR13 Communication

Thank you for your interest in the communication setup between the S7-200 and Woodward MFR13.

Unfortunately, specific pre-made code isn't publicly shared. However, Siemens provides extensive documentation and examples to guide you in configuring Modbus communication.

You can find helpful resources, including manuals and application examples, on the Siemens Support website and SiePortal. Search for "S7-200 Modbus Master" and "Woodward MFR13 Modbus Slave" for relevant information.

While a dedicated video isn't available, Siemens offers various online training courses and tutorials covering Modbus TCP/RTU programming with S7-200. Check the Siemens Industry Online Support for available courses.

Communicating between Siemens S7-222 & Fatek 20MA PLCs via RS485

Establishing communication between a Siemens S7-222 and a Fatek 20MA PLC over RS485 requires configuring both PLCs as either master or slave, defining a communication protocol (e.g., Modbus RTU is commonly used), and ensuring correct wiring and termination.

Key Steps:

• Protocol Selection: Modbus RTU is a good starting point due to widespread support.
• RS485 Wiring: Correct A/B wiring, proper grounding, and 120-ohm termination resistors at both ends of the RS485 bus are crucial.
• PLC Configuration: Configure RS485 communication parameters (baud rate, parity, data bits, stop bits) to be identical on both PLCs.
• Data Mapping: Define which data registers on the Fatek PLC will be accessed by the Siemens PLC, and vice versa.

Refer to the following resources for detailed instructions:

• Siemens Support - S7-200/22x RS485 Communication
• Fatek Industrial Website (for 20MA RS485 documentation)

What are OPC Servers?

OPC (OLE for Process Control) Servers act as an intermediary layer allowing different industrial applications to communicate and exchange data. They provide a standardized way to access real-time data from various PLCs, sensors, and other devices, regardless of their manufacturer or communication protocol.

Benefits of OPC Servers:

• Interoperability: Connects diverse industrial systems.
• Data Access: Provides a unified interface to access real-time data.
• Scalability: Easily add or remove devices without changing applications.

Siemens offers OPC servers such as Siemens OPC UA Server. Consider OPC UA as a modern, secure alternative to classic OPC.

Communication between S7-200 and SINAMICS MM440 via RS485

Hello!

The SINAMICS MM440 drive supports several communication protocols over RS485, but direct S7-200 communication isn't natively supported. You'll likely need to use Modbus RTU as an intermediary protocol.

Here's a breakdown:

• MM440 supports: PROFIBUS DP, PROFINET, EtherNet/IP, Modbus RTU, and USS.
• S7-200 supports: PROFIBUS DP (with CP module) and Modbus RTU (via CP module or PPI).

Recommended approach: Configure the MM440 as a Modbus RTU slave and the S7-200 as a Modbus RTU master using a suitable communication processor (CP) module for the S7-200.

Refer to the MM440 documentation for Modbus RTU parameterization details: SINAMICS MM440 Documentation

For S7-200 Modbus RTU configuration, consult the S7-200 documentation and example projects.

If you encounter issues, please provide details about your CP module and desired data exchange.