Separating reachability from the controller service (controller identity retrieval)

TobyBell0666 · 28 Mar 2026, 19:48 UTC

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TO
TobyBell0666
Our workshop laptop sometimes pings Fairino FR10, but the documented read-only check for controller identity retrieval times out. A second laptop has worked, though its network notes are incomplete. We're in a maintenance station using a diagnostic laptop, with a fixture plate as a reference. I want to distinguish address, route and service problems before changing controller settings or blaming the script.

19 replies

LU
LuisAli0260
Replying to TobyBell0666

@TobyBell0666 What endpoint does the installation record specify, and which local route selects it on each laptop? Redact unrelated addresses when sharing.

13 points
TO
TobyBell0666
Replying to LuisAli0260

The recorded endpoint agrees with our script. My failing laptop selects another active adapter; the working one selects the workshop interface.

20 points
LU
LuisAli0260
Replying to TobyBell0666

Give that route difference to your network owner for a targeted correction. Repeating the documented read-only check should then settle the connection problem.

7 points
HA
HassanCarter0965
Replying to LuisAli0260

A route correction addresses the identified difference but doesn't guarantee service availability. The next check could establish connection and then fail at the application stage

13 points
LU
LuisAli0260
Replying to HassanCarter0965

Fair. I should've said it tests the routing lead. Record connection establishment separately from the read-only response; a service error would be a narrower next problem.

17 points
TO
TobyBell0666
Replying to LuisAli0260

Would a successful ping help at all, then? I've got a folder of ping screenshots feeling increasingly decorative.

18 points
LU
LuisAli0260
Replying to TobyBell0666

@TobyBell0666 Limited reachability evidence. Ping doesn't exercise the documented SDK service, and a missing reply doesn't by itself prove the controller is offline.

19 points
AM
AmaraBrooks0861
Replying to LuisAli0260

My own diagnostic laptop changed its selected route when its active network connections changed between office and workshop use, even though the application endpoint stayed the same.

14 points
TO
TobyBell0666
Replying to AmaraBrooks0861

@AmaraBrooks0861 I'll retain the relevant adapter state alongside our selected-route information, making sure it describes the same laptop session in which the check fails.

17 points
ME
MeiAdams0168
Replying to TobyBell0666

@TobyBell0666 Would a check with only the workshop connection establish the required fix, or does the normal multiple-connection setup still need review?

10 points
LU
LuisAli0260
Replying to MeiAdams0168

Follow the documented connection setup with the network owner. Even a successful single-connection check wouldn't establish how the laptop should be configured during its normal combined use.

5 points
HA
HassanCarter0965
Replying to LuisAli0260

@LuisAli0260 And don't change the robot's address just to fit the laptop's route. You've identified a laptop difference, not an incorrect controller endpoint

10 points
TO
TobyBell0666
Replying to HassanCarter0965

Agreed. I've sent the route comparison to our network owner. The endpoint matches our installation record, so that's the reference I'm using.

10 points
ME
MeiAdams0168
Replying to LuisAli0260

@LuisAli0260 If the read-only request returns a service error after connection, what does that establish compared with a failure to connect?

15 points
LU
LuisAli0260
Replying to MeiAdams0168

@MeiAdams0168 It can establish that connection succeeded and an application response arrived. Then interpret that response using the matching SDK documentation, without calling the whole check successful.

9 points
AM
AmaraBrooks0861
Replying to LuisAli0260

On my installation, ping and the documented service were handled by different filtering rules. The network owner's logs established why ping replies coexisted with service failures.

19 points
TO
TobyBell0666
Replying to AmaraBrooks0861

@AmaraBrooks0861 If the route investigation leaves the service unavailable, I'll ask about filtering. I haven't established that your separate filtering example applies to our installation.

19 points
TO
TobyBell0666
Replying to TobyBell0666

I still don't have a verified read-only connection from our diagnostic laptop. The route difference is a useful lead, but not a confirmed fix.

19 points
LU
LuisAli0260
Replying to TobyBell0666

@TobyBell0666 That status fits the missing verification: an identified difference, with the actual connection result still unresolved.

19 points

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