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I don't understand what broke. Is the thermocouple wire broken - inside the head? - at the terminal block connection? - external to the thermocouple head? Or is the thermocouple head itself broken somehow? If so, broken off from its pipe threaded process mounting? How is it broken?

Wikipedia is a good place to start to learn what Wobbe Index is: https://en.wikipedia.org/wiki/Wobbe_index

TMA. Too Many Acronymns. No pictures showed up with your post, but photos of enclosures rarely define internal functionality. Sometimes brand model numbers help tell the story; links to manuals do, too. I don't know what a 'Comment interface' is. Can you expand on that? I'm not sure what...

Thanks again for clarifying the character packing, the password timer and alternative addressing but I take my hat off for you for your explanation of how FC16 works as expected with a register count of 10 and a byte count of 20; Honeywell's description for FC16 just did not make sense to me.

Thank you jschulze for shedding the light of experience on the topic. Password is 0x736F 0x6C61 is ASCII for sola (all lower case), 0x534F 0x4C41 (SOLA in caps). Questions Are the remaining 16 characters are 0x00 (ASCII null) characters, not 0x3030 (the number, zero) characters? Were you...

perfect, all new thread changes, exactly like the old site

Wow. Instant posting - that's great ! ! ! And I see an insert image button ! ! ! Fantastic.

Does Modbus have to be at the bottom of the categories page?

I used to use a link up top that linked to "orphan" threads (I think that's what they were called, threads with no reply) to find Modbus threads that had not yet had a reply, but that seems to have disappeared, too.

I thought the URL had been hi-jacked this morning until I poked around for awhile. Not a 'bug' as such, but such a huge difference that it's hard to figure out which threads have been newly updated with a new post in a thread. The previous site listed thread topics for maybe 20-30 threads...

I have no idea what a SOLA boiler is, but I can apply some Modbus experience to try and point you in the right direction, but I'm not sure your Modbus Master will execute the Function Code 10 (decimal) (0x16) properly. In various places in the Honeywell document, register 0177 is noted as...

What exactly is the Modbus problem? Is the problem reading values from the SOLA where you get an error or can't connect or get Time out? Or can you successfully read data via Modbus, but not write data to the SOLA?

Please make a sketch of the section of the process with physical placement of the connection points. Are there impulse tubes or remote seal capillaries? Dry or wet legs? Actual temperatures over the course of the process? magnitude of DP being measured? (and units?)

What are they measuring the level of that a continuous supply of additional water does not appreciably affect the level?

1. Liptak describes an 'aspirated' system with water-air injection as example e in the diagram at the link below https://i.postimg.cc/0jwG8gRL/Liptak-Option-e-shows-water-injection-aspirator-instead-of-gas.jpg Instrument Engineers Handbook, Liptak, Vol 1, 4th Ed. pages 421-422: The purge...

Reference manual, not sure that it is the current manual: https://www.emerson.com/documents/automation/manual-danload-6000-reference-manual-daniel-en-133744.pdf A communications manual for the Danload 6000 is at...

Statements from Experion HS R430 Configurator Reference Guide (March 2015) Experion HS is a Supervisory Control and Data Acquisition (SCADA) software package that provides an entry level solution for small to medium sized applications with up to 15 Station clients and up to 16050 SCADA...

RS-485 is a electronic specification for serial communication. As such, it does not define, recommend or imply any connection to the protocol, the set of rules determining how the serial communications operates, who talks, who listens, addressing, how data is formatted, whether to...

1. It might be that the inquiry is requesting that you 'verify' your controller's Modbus map (as though the published version is not verifiable?). I've used a copy of the vendor's Modbus register map (documenting with the source provenance) and itemized which values are read or written...

If there's no reply 2 weeks then others are as confused with the lack of specifics as I am. 1. What brand model terminal server/MODBUS switch are you using? Can you provide a link to the spec/manual? I'm not sure what kind of functionality it is supposed to be providing. 2. For...