Category Archives: CCN

CCN Gateway Changelog

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Download&Extract the zip file, there are 2 firmware files inside it, one is for BACnet version, another is for Modbus version.

For CCN Gateway with firmware version prior to v3.00, please go to the bottom of page.

3.09  2025.11.01  Download

Bugfix: In very noisy environment, RS485 communication may stall.

CCN: Allow string points in  CONFIG or SERVICE tables, but writing to them is not supported yet.

3.08  2025.10.04

CCN communication performance is improved.

BACnet Mapping of String point:  the unit should be NO_UNITS, not SQUARE_METERS.

3.07  2025.06.06

Carrier has a localized air cooled heat pump serial in Chinese market.  30RQVHS is one of the model. We found its A1/B1 terminals talks CCN and Modbus RTU slave at the same time. Its CCN timing is a bit different to other chillers. The central control panel writes to its SERVICE table to control it.

This version modifies CCN timing to be compatible with it, and supports CONFIG and SERVICE tables.

3.06  2025.04.10  Download

Fix bug that “IP Router” setting will be lost after reboot.

3.05  2025.02.26

Fix bug that may crash the daemon when there is collision on the CCN bus.

Updates BACnet ms/tp driver from BACRouter 6.09

2.26  Download

CCN Gateway changelog

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2.9 2017.5.30

Add Compatibility to a strange 30RQ chiller.

Remove feature introduced by 2.2 (Release forced point when initialization).

2.8 2016.10.26

Buffer overflow while convert Unicode string to utf8.

2.7 2016.10.3

WebUI use basic authorization method.

WebUI table index overflow (Thanks to Nitin)

2.6 2016.9.13

WebUi show Ethernet address.

2.5 2016.9.13

Discard character out of 0-9, a-z, A-Z in string.

2.4 2016.8.26

Selectable 0.001，0.01，0.1，10，100，1000 multiply mapping

BACnet version merge bugfixs from BACnet Router firmware.

2.3 2016.8.16

Low level api changed, prepare for future product

Bug introduced in 2.1 is fixed: continuous error after communication fail.

2.2 2016.8.12

When initialize device, if point is forced by high priority, release it.

2.1  2016.8.10

Firmware filename has version and crc.

Show version on left tree menu.

Auto refresh page after reboot or firmware upgrade .

Other ui bugfixs.

Demo Gateway

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For user to get familar with CCN Gateway, we build up simulated DEMO Gateway.

This demo Gateway link with 6 CCN chillers, each has same bus number of 0, element addreses are from 1 to 6.

The username to acces is:  admin, no passowrd is needed.

For modbus gateway, the acces point is http://demo1.hvacrcontrol.com

For BACnet gateway, the access point is http://demo2.hvacrcontrol.com

User could use modscan or VTS to test the modbus/BACnet function. The port number is defined in the Gateway’s general setting section.

Because the accsss is open, if there are users operate it concurrently. it would behave strangely. If you want exclusively operate it, please contact us, we would give you other private access point.

 

 

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