Tag Archives: MB+

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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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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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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