Process Control and Automation using Modbus Protocol
Modbus has been around industries for over 30 years, but it's still the dominant voluntary standard used in almost all major industrial process control, instrumentation and automation products in the market today.
EIA RS-485 is the industry's most widely used bidirectional, balanced transmission line standard. It is specifically developed for industrial multi-drop systems that should be able to transmit and receive data.
INTRODUCTION TO MODBUS TCP/IP
The following information describes the operation of Modbus TCP/IP as it relates to Acromag Series 900EN-40xx I/O modules. For more detailed information on Modbus, you may also refer to the "Modicon Modbus Reference Guide".
PAC versus PLC
With control projects becoming more demanding and PLC's offering limited functionality without expensive and proprietary expansion modules, the need for flexible and reliable alternatives has never been greater. Amplicon presents the benefits PAC can offer.