Welcome to Manoj Mathew's Website

I am an Electrical Engineer working with Cimac FZCO, an Industrial Automation System Integrator in Dubai. Cimac was established in Middle East in 1996 with objective of providing lump Sum Turnkey capability for Control & Instrumentation covering all types of control and automation systems.

SMS OPC I/O Server for Telemetry SCADA

SCADA systems communicating to large numbers of far flung controllers/ PLCs communicate to them using a dedicated link (copper, optic fiber or radio) or have to depend on the telecom network. Especially in cases where the telemetry system is commissioned later in the life cycle of the project, or due to various other reasons, it may not be possible to install the dedicated communication media. Telecom based connectivity for such systems is a viable option.

Development of EthFilter: A Standalone Modbus OPC Server /Data Concentrator for Remote Dialup Access

For one of our projects, we were presented with a unique problem of a Master SCADA station communicating to over 165 remote stations on Modbus TCP/IP, connected by remote dial-up. While many off the shelf I/O Servers are available which can handle dial-up & Modbus RTU protocols, this application was unique as :

  1. The dial-up function is handled by a router at the Master SCADA.
  2. Due to the implementation of the router, all modbus slaves have ip address in different ip classes by breaking up the subnet into smaller subnets of 8 addresses each.
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