how to communicate DTC1000 via DVP 14 ss ( Delta PLC)

just connect delta PLC and delta DTC modules via RS485 port and download the program(in pdf) as i have attached it in previous post.
 
Why adding 400001

Hi,
I've connected DTC1000 to a FATEK PLC and I want to read the measured temperature and write it in R2000 for example


A friend said read this file
http://www.deltaww.com/filecenter/P...405/Manual/DELTA_IA-TC_DTC_OM_EN_20160311.pdf


So I saw that the value will go to 1000H which is 4096 in Decimal
But that didn't work and my friend said you should add 400001 to it. It means that PLC software can read data at 404097 and it WORKED. I'd like to know where this has number come from or maybe I'm making mistakes in my understandings



Thanks
 

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