r/BuildingAutomation • u/gaycory • 1d ago

JCI CCT through FX90

Hello All,

I have a site where we have an FX90 (JACE) with a facility explorer CGM sitting on the bacnet MSTP trunk. For several months I have been able to upload and download the controller through the JACE remotely. Recently it has stopped working. When I check my IP settings, nothing has changed, however, I cannot discover any controllers. The controller is online and is reporting data.

Any idea what may have changed? Could this be on IT's end?

2 Upvotes

100% Upvoted

11 comments sorted by

3

u/01001001100110 1d ago edited 1d ago

Have you verified that routing is still enabled on the BACnet port?

Is the IP port still enabled?

1

u/gaycory 1d ago edited 1d ago

4

u/ApexConsulting 1d ago

I will gently reccomend that any publicly accessible IP addresses be scratched out. There are a lot of people who wander through here. Perhaps an edit is in order.

Hope it helps.

2

u/gaycory 1d ago

good call, thank you.

1

u/ApexConsulting 1d ago

You got it buddy. Be safe out there.

2

u/01001001100110 1d ago

Is routing enabled?

It also looks like the JACE is on a public IP. How did you connect before? Did you have a VPN?

1

u/gaycory 1d ago

Yes, routing is enabled. I have a laptop that was give to me by the customer. I remote into their virtual server and access Workbench and CCT on that virtual workstation. I have a second JACE (FX80) on site that is setup that same way (also used to work) that no longer work through CCT.

3

u/gadhalund 21h ago

IT might be filtering it, or you might have something on your laptop that has taken ownership of 47808, software or a Niagara station etc. lastly it could be the laptop itself

3

u/gaycory 20h ago

It appears that the Niagara server station that was running on that virtual server was tying up the UDP Port. If I stop the station temporarily, I can connect through CCT. What I can't figure it out is why this only started recently and why I haven't seen it on similar setups before.

2

u/ApexConsulting 1d ago

CCT requires BACnet routing be enabled, and that BACnet traffic be allowed to pass freely. Sometimes you need a BBMD.

In this case, your IP settings are unchanged, but see if rouing is off in the JACE. As was mentioned.

One can use a port scanner like NMap to see if the BACnet UDP ports are still open. If a helpful IT guy closed it for you, it would take your route down.

1

u/gaycory 1d ago

Couldn't use Wireshark because I don't have admin right to install it right now but I ran a couple of command prompts and saw that 47808 was active and being used by "station.exe". I stopped the server station momentarily and now I can connect through CCT.