Content
# #solvang-ww — 2025-10-29
**09:20 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761754830452289):** @Mason Radke trouble at Solvang WWTP
**09:20 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761754843349299):** can you log in and check the PLC for the SBR?
**09:20 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761754846705099):** ok yeah
**09:21 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761754865854349):** They replaced the UPS (full power down) now things are not happy
**09:21 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761754909204629):** connecting now
**09:21 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761754916151789):** The HMI keeps showing some PLC error code, and they get a general plant alarm
**09:22 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761754948570319):** The plant does not seem to be working correctly
**09:24 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755099584429):** i was connected for a second now i cant connect
**09:25 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755104399709):** internet may be unstable or down
**09:25 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755124421269):** it might be back
**09:26 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755198108029):** waste water? im not seeing any alarms
**09:30 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755424854979):** an issue at the HMI only maybe?
**09:31 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755461614299):** plant looks ok
**09:31 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755465951049):**
![[F09PD0D9NQ5_image.png]]
**09:31 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761755472299119):** could be. they keep getting an alarm, which I believe is an output from the PLC
**09:31 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755482190649):** ok i can go online
**09:33 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761755598400919):** this damn thing gets my anxiety up everytime it hiccups. We need to get another PLC in there, or buy another used one and set it up as a backup.
**09:33 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755613653839):** yeah
**09:33 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755618978619):** im online with the PLC
**09:33 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755621466769):** everything looks ok
**09:34 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761755645262049):** can you vnc to the hmi?
**09:34 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755659658379):** im not sure
**09:34 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761755678538839):** do we know the IP
**09:34 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761755687163439):** 192.168.50.101
**09:34 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761755697374169):** I knew you were going to ask....so I was already looking
**09:42 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761756172257849):** negative on the VNC connection
**09:46 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761756360857099):** i think i see the HMI at 192.168.50.111
**09:46 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761756382877609):**
![[F09PEGCMZ1C_image.png]]
**09:54 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761756860560379):** i can connect with VNC but havnt round the right password yet
**09:54 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761756869484469):** will be really helpful to see whats on that screen
**09:55 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761756918252519):** let me get some more information.
**10:03 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761757413654789):**
[[F09PD90027P_img_2553.mp4]]
**10:04 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761757453149819):** automation direct HMI?
**10:04 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761757455010369):** hmmmmm
**10:04 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761757460356459):** thats not the panelview ive been working on
**10:04 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761757480570589):** right. it's the plant HMI
**10:05 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761757559472969):** I can take this now if you want to go work with Andy
**10:06 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761757585171989):** ok sounds good..
**10:06 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761757593345909):** everything looks good on scada. maybe thats a good sign
**10:06 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761757604249899):** let me know if i can help
**10:06 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761757618922039):** I will, always. Thanks!
**10:08 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761757717517519):** did you put RUT on EWS?
**10:09 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761757750607009):** no, tailscale is the new RUT for me. lets see.
**10:09 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761757760661909):** also i just noticed that the damn function block editor did not get installed some how
**10:09 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761757770570719):** i need to try to modify the installation or re-install again
**10:09 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761757782429579):** dev 1 will still work for us if you need to get online and into FBD
**10:13 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761758023387099):** yeah I just saw FB editor is not installed.
**10:13 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761758031254579):** I will switch to Dev 1
**10:16 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761758172104069):** Are you RUT to the SCADA machine?
**10:16 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761758189885509):** i was. off now
**10:18 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761758298268369):** I couldn't get Dev1 to go online with PLC last time I tried. You were successful recently?
**10:38 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761759506632179):** It would have taken me a while to find this information by old search. Got this from my friend Gemini:
**10:38 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761759510585429):** This specific C-more HMI error is a common communication fault, particularly when communicating with *Allen-Bradley (Rockwell Automation) ControlLogix, CompactLogix, or MicroLogix PLCs* using the *EtherNet/IP* protocol.
The error code translates to an issue with how the HMI is requesting a tag or service from the PLC.
Error Analysis
*ComponentCode / ValueMeaningHMI Error CodePLC-498*Allen-Bradley EtherNet/IP specific: *Service Packet Error*. This means the packet sent by the C-more panel requesting data was not processed correctly by the PLC.*Hexadecimal Error0x040000*This hexadecimal value points to the PLC's internal error response. In the context of Allen-Bradley's CIP (Common Industrial Protocol) errors, this specific code often means: *The requested tag/address could not be located, deciphered, or accessed.*
In short: *The C-more panel is asking the PLC for a piece of data (a tag) that the PLC cannot find or recognize.*
Top Troubleshooting Steps
The quickest way to solve this is usually by checking the tag definitions on the C-more panel:
1. *Check Tag Name Spelling and Case:* The most common cause is a simple typo. The tag name in the C-more Tag Name Database *must be an exact, case-sensitive match* to the tag name in the PLC's project. Even a missing underscore or capital letter will cause a `0x040000` error.
2. *Verify Tag Scope (Controller vs. Program):*
◦ *If you are using an Allen-Bradley ControlLogix or CompactLogix:* Tags can be defined as *Controller Scope* (accessible globally) or *Program Scope* (accessible only within a specific routine).
◦ *The C-more HMI can generally _only_ access tags set to Controller Scope.* If the offending tag is currently set to Program Scope, you must change the tag's scope in the Studio 5000/RSLogix 5000 project to *Controller Scope* and download the change to the PLC.
3. *Check for Unused or Deleted Tags:*
◦ If you recently removed a tag from the PLC program but forgot to delete it from the C-more project, the HMI will continuously try to read a non-existent address, generating this fault.
◦ *Action:* Delete any unused or non-existent tags from the C-more Tag Name Database.
How to Pinpoint the Offending Tag
You do not have to guess which tag is causing the issue. The C-more panel can tell you:
1. On the running HMI panel, press and hold the *upper-left corner* of the touchscreen for several seconds until the *System Menu* appears.
2. Navigate to the *Error List* or *Panel Information* screen.
3. This list will show the active communication errors, including the *specific tag names* that are generating the PLC-498 fault. Focus your debugging efforts on those tags.
**10:39 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761759547474079):** This is not a new error. It's been there for a long time. Funny how they don't see things until they really start looking
**11:14 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761761663280009):** For the record:
**11:17 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761761835131169):** found the alarm that was tripping was the SBR1 high level float. found this by looking into the alarm history.
Trevor says that was funny because he suppressed that alarm in scada but was still getting the general plant alarm.
Found this rung with a coil called T1_HIGH_LVL_FLOAT that is triggered by the high level float DI. There is also a coil to a Pax object
this rung is in SBR1_IO
![[F09PATWFWH1_image.png]]
**11:19 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761761990700149):** however, this T1_HIGH_LVL_FLOAT tag is not used anywhere in the program according to cross reference.
**11:33 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761762795771449):** I can't find the SBR1_LSH P_Din object in the program @Mason Radke
I've done a cross ref, find all, and tag search. all I find is the tags, but no P_Din object??
**11:51 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761763863811299):** No P_Din object is found (Mason helped)
I Xref the Local DI and found three occurances
![[F09PHJKAZ1Q_image.png]]
**11:53 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761763994673209):** found the DI tied to a timer, which is the same for all three tanks
![[F09PM5LB7D2_image.png]]
**11:54 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761764056743909):** that timer dn bit is in the list of alarms that trigger the General Alarm.
**13:51 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761771061590449):** you good over there?
**13:51 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761771063933749):** figure it out?
**14:17 [Kevin](https://slack.com/archives/C08HMJX8J4F/p1761772676736419):** yep all good!
**17:05 [Mason Radke](https://slack.com/archives/C08HMJX8J4F/p1761782713060739):** Good!