Tag Archives: TDR

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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Heat Tracing short located with a TDR

One of Delta’s long time clients called with an unusual request inquiring if a TDR could be used to help locate a short circuit in a section of heat trace wiring.  This client has had Delta TDR its’ PLC communication … 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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Modicon Remote I/O RG-11 Quad Shield F Connector Installation

By Bob Culley This is an instructional video for the installation of an F connector onto a Quad shield RG-11 coaxial cable utilized by all Modicon remote I/O systems. http://www.youtube.com/watch?v=7eo9e2SW-O0

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Installing an F connector onto a Quad Shield RG-6 cable

By Bob Culley Take a look at this quick instructional video showing how easy it is to properly install the correct F connectors onto an RG-6 quad shield coaxial cable. http://www.youtube.com/watch?v=Li0vPx_xAxo This is the correct combination to utilize in a … Continue reading

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