Get onto Honeywell. Try their website, and if all else fails, try their telephone technical helpline.
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Documentation for the former TDC2000/3000 and the current Experion DCS is well guarded by Honeywell's Gatekeeper.
The Honeywell public web site has only Experion sales literature, it does not post technical or support documentation. Registration is required for access to Experion data, and it is not automatic and instantaneous approval, like a forum.
A google search for "Honeywell Experion manual" brings up a number of sites, one of which is scribd.com, which does have the 300 controller manual and 4 or 5 other technical manuals, none of which are downloadable and can only be read on-line.
Emerson's DeltaV, on the other hand has extensive on-line documentation.
What is the advantage and disadvantage of using honeywell DCS instead of Yokogawa? Our Plant is using Honeywell DCS and the protocol used are MODBUS TCP and MODBUS OPC. Is the MODBUS RTU never used in Honeywell DCS?
I've no clue on the comparison between DCS brands.
>Is Modbus used on Honeywell DCS?
Yes. Honeywell's DCS has Modbus RTU capability because the wireless field instrument network I use, the Honeywell XYR5000, talks Modbus RTU, and Honeywell has an applications note (on their public web site) for applying XYR5000 to the SI-FTA, Serial Interface Field Termination Assembly, which is a DCS component.
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