Temperature Controller ATR14 display value is Modbus value

user16134 · Post by **user16134** » 16/10/2017, 16:34

The ATR141 and ATR142 Temperature controllers Display values are not same as Modbus Register Values (both Register 1000 and 1100). Sometimes, the Modbus value corresponds to Display value (about 2% of the time), Display value is more than Modbus value by 0.1F (85% of the time) while Display value is less than Modbus value by 0.1F (13% of the time). Not sure what is going on. Any help? My Modbus master is Labview and I have a Modbus Gateway from TCP to serial RS-485 (2-wire). My Temperature Sensr is an RTD (PT100)

Post by **Pixsys tecnico 6** » 17/10/2017, 9:02

Hi,
the value in the display is similar but not the same, because in the display there is a filter to avoid display display problem (process value not stable). In the ATR121/141/142 you can not disable this filter.

Best Regards.

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