Hi my friends.

I have the same problem.
I have the Siemens componets:

ET 200SP, BaseUnit BU15-P16+A0+2D, BU type A0 Siemens   6ES7193-6BP00-0DA0
AI 4xRTD/TC 2,3,4-wire HF Siemens   6ES7134-6JD00-0CA1

I have on Channel 0 "Thermocouple, Type K".
I have on Channel 3 "Pt100" for temperature compensation.

How do you set the module in the hardware to show the right temperature?

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Split from 6ES7134-6JD00-0CA1.

Hello,

you must change the BaseUnit from "6ES7193-6BP00-0DA0" to "6ES7193-6BP00-0DA1"

Hi Tincek1,

if you want to use a PT100 for compensation (because you have only BU type A0), please connect the PT100 to channel 0 of the module. As far is i understand the manual, only channel 0 can work as reference (for module, or for group).

Please check the configuration as shown in the manual, maybe this helps.

Furthermore:

- the PT100 has to measure the temperature at connection point

- if the thermocouple was lenghtended, the correct compensation cables has to be used (not copper)

SIMATIC ET 200SP analog input module AI 4xRTD/TC 2-/3-/4-wire HF

Setting: "No reference channel mode" -> "The temperature value at channel 0 can be..."

Setting "Reference channel of the module -> "...TC channel uses channel 0"

"...must be configured as "Thermal resistor Pt 100 climatic range Degrees Celsius"

maybe this helps

regards

sancruz

What Sancruz means by,

- the PT100 has to measure the temperature at connection point

is that the cold junction (CJ) RTD should measure the temperature of terminal connectors that the thermocouple is connected to.  So if you can, use a really small diameter RTD and put it under a screw terminal (if the module has screw terminals).  RTD's are isolated from their sheath, by design.

Just leaving the CJ RTD in the air close to the terminals can produce bad effects like when a panel door is opened the outside air coming in cools or heats the air-exposed RTD and the reported temperature shifts and swings according to that change.

The correct base unit apparently uses an temperature sensor located inside and close to the terminals..