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What is the maximum number of registers the Modbus Device Importer (MDI) can configure and support?

Issue
What is the maximum number of registers the Modbus Device Importer(MDI) can configure and support?

Product Line
ION Enterprise 5.6, ION Enterprise 6.0, SPM 7.0.1, PME 7.2.x, PME 8.x

Cause
User would like to know maximum number of registers the Modbus Device Importer(MDI) can be configured and supported.

Environment
Creating device type thorough Modbus Device Importer (MDI)

Resolution

When configuring MDI, user will have to create Managers then Modules and then registers. Therefore, they each have their own limitation as described below.

User can have maximum of 128 Managers, 4095 modules per each manager, and 255 registers per each module(by convention).

It is possible to have multiple managers of the same type in the MDI (the translators definitely don't care about this).

These limits are for compatibility with the MDI, to make it easier to validate what is an unused handle when automatically allocating new handles.

NOTE: In previous versions of the MDI the maximum was around 300-400 registers total. This limit was removed in version 5.6 of ION Enterprise when extensions logging support was added to the MDI.

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