NETTIME No Longer Working in Hardware, but OK in DmSim

[Mike Nash]

I've been out of the office most of the last 8 months, so I'm just catching on that NETTIME is never succeeding on my BX-DM1E-36ED23. I have it setup to display the current time on a serial device. The time display is fine, but the last time it successfully updated the time from time.nist.gov was October 2, 2024 at 3:10:31 PM. It attempts an update every two hours usually, but triggering it manually also fails.

I have since tried two other BRX with logic stripped to just execute NETTIME with the same results, error after 1000mS timeout. Ten seconds also errors. However, DmSim executes the same code and succeeds. All of these are on 2.9 or 2.10 firmware, but last edits were with 2.10.4 DmD.

I've tried various IP addresses for NIST and one for Google.

I have not tried on a different network. I also don't know what happened October 2, 2024 as I wasn't in the office that day. Any ideas?

[BobO]

I've been out of the office most of the last 8 months, so I'm just catching on that NETTIME is never succeeding on my BX-DM1E-36ED23. I have it setup to display the current time on a serial device. The time display is fine, but the last time it successfully updated the time from time.nist.gov was October 2, 2024 at 3:10:31 PM. It attempts an update every two hours usually, but triggering it manually also fails.

I have since tried two other BRX with logic stripped to just execute NETTIME with the same results, error after 1000mS timeout. Ten seconds also errors. However, DmSim executes the same code and succeeds. All of these are on 2.9 or 2.10 firmware, but last edits were with 2.10.4 DmD.

I've tried various IP addresses for NIST and one for Google.

I have not tried on a different network. I also don't know what happened October 2, 2024 as I wasn't in the office that day. Any ideas?

Not sure. A bit puzzled. I tried it with a couple of public NIST servers and I got no response. Request went out, but nothing came back. I then hit our firewall's server and that worked fine. Tried the same public servers with the Sim and that worked...but after doing so, it's working fine from hardware, even to servers I hadn't previously tried.

Can't say what you may be experiencing, but mine feels like a switch/router/firewall thing. It seemed happy to let the PC out, but not the PLC, but once the PC worked, it seemed happy to route the PLC. The protocol is dumb simple, UDP packet out and UDP packet back, but if the firewall wasn't passing port 123 it wouldn't work.

[Mike Nash]

I have gone back and forth a number of times and the PLC never has success. I suspected it was external to the PLC, but I'm pretty IT illiterate. I'll have to make the effort to carry a BRX home to try.