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XN2: Johnson Controls N2 Master Protocol Driver v10.0


XN2: Johnson Controls N2 Master Protocol Driver

General Information:


The XN2 allows you to connect N2 devices in a Metasys network through a low speed serial connection using the N2 System protocol from Johnson Controls.

The N2 System protocol is a general interface for accessing data that resides in devices on a N2 network. Each device on the N2 can be thought of as a data base manager. The key to referencing a specific N2 device's data base is the device's N2 address. The data under the management of a particular N2 device can further be subdivided into groupings called regions. Each region is made up of one or more records, each record within a region having the same structure.

For details about the structure of each supported object, please refer to the 'N2 System Protocol Spec.pdf' document from Johnson Controls.

In order to get a first response from your device, it might be necessary that you send a 'Identify Device Type' command followed by a 'Poll Without/ With Ack Message' command prior to any other reading or writting commands.


Available Commands:



Supported Devices:

(This list is only indicative and may exist other unlisted equipment that are also communicable with this driver).


This driver includes:



Available Downloads:



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