Tag Archives: trunk cable

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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A Commentary posted on Facebook about a PLC & I/O conversion from a Happy Client!

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Temporary Remote I/O Cable Replacement Causes an Unexpected Issue

During a recent Modicon remote I/O service call at a large oil refineries tank farm which had been having intermittent communication, an unusual problem was discovered. The system had been having communication drop-outs intermittently for several weeks. During that time, … 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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General Information and Specifications for a Modicon Remote I/O System

Delta Automation, Inc. is fully capable of the developing the layout for any sized remote I/O network. Our engineers have successfully installed thousands of these systems worldwide. We offer the most comprehensive testing and troubleshooting available, to bring your system … Continue reading

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The all too often misunderstood Hot Standby In-line Terminator Assembly

By Bob Culley In the Modicon redundancy, or Hot Standby (HSBY) systems the two PLCs both contain the same programs. The Primary PLC is the one actually running the process, while the Standby unit is waiting to pick up where … Continue reading

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