Category Archives: Modbus Plus

Delta Automation is Prepared to Assist any or all of our clients in the the wake of the Hurricanes

Graphic courtesy of NOAA Delta Automation is prepared to assist any or all of our clients that were in the path of Harvey or may be in the path of  Irma. Our stock of new and refurbished equipment is ready … Continue reading

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Consequences of Duplicate Addresses on a ModBus Plus Network

As with any addressable network, having duplicate addresses is an issue. On Modbus Plus networks, one of three things can occur. Modicon technical support disagrees on this subject but in my 30+ years of working with these networks all over … Continue reading

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Identifying ModBus Plus Connectors

Please click here to link to the complete video!

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Modicon Network Certifications

From the day after Christmas on through fours days past the New Years holiday, two teams of Delta Engineers were busily working long 12+ hour days testing, repairing and certifying Modicon remote I/O and Modbus Plus networks during a plant … Continue reading

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Modicon Remote I/O Push Button Panel Repairs

Modicon/Schneider customers utilizing the remote push button panels have been informed by the OEM that these items are no longer repairable. We here at Delta Automation, Inc. still repair these items. We are able to replace the push buttons, lamps, … Continue reading

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Dual Cable ModBus Plus Network Phantom Errors

ModBus Plus Dual Cable Phantom Errors The advantages of utilizing the dual cable capability of the Modicon Modbus Plus system are to increase and maintain system uptime and availability. The dual-redundant nature of the system is virtually invisible to the … Continue reading

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Modbus Plus Super Tap: Features and a ‘Gotcha’

The Modbus Plus Super Tap is a vast improvement over the previous several designs that have been in service since the mid-eighties. The first connector to be used was the MBKT type. It had split type compression connections and used … Continue reading

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How often should Remote I/O & Modbus Plus networks be certified?

We recently had a client with many, many Modicon remote I/O and Modbus plus networks installed and in use in their plant, pose this question. The short answer is usually every one to two years or if they are having … Continue reading

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Quantum Remote I/O Metallic Cable System

This is the TDR trace that shows the original cable system on a recent project that Delta Automation, Inc. was tasked with repairing. This system shows many issues: excessive dB losses, poor splices, poor connections and terminations. This is the … Continue reading

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