QUESTION:  
How do I parameterize the ET 200S, if the compensation of temperature of a thermo element is intended to be done by the reference junction inside the terminal module of the electronic module 2AI TC HF (6ES7 134-4NB00-0AB0)?

ANSWER:  
Especially designed for this task: module configuration with terminal module TM-E15C24-AT (6ES7 193-4CL30-0AA0, spring-loaded clamp)  or TM-E15S24-AT (6ES7 193-4CL20-0AA0, screw clamp) and the analog electronic module 2AI TC HF (6ES7 134-4NB00-0AB0). 

The temperature values of the internal reference junction of TM-E15C24-AT or TM-E15S24-AT only apply to this slot. Therefore they are only available to the plugged electronic module 2 AI TC HF. 
For a correct configuration, the parameters of both the IM and those of the module have to be set.

ET 200S Head Station
Regarding parameters of ET 200S head station IM151 (z.B. 6ES7 151-1AA03-0AB0) you should make sure to have the parameter "reference junction" deactivated when using the internal compensation of parameter "Reference junction".

Fig. 1: Parameters of IM 151

Analog Interface module
Please take the following settings into account when parameterizing the analog electronic module 2AI TC HF:

• Generally, the parameter "Type/range of measurement" must show value "deactivated" on unused channels.
• As reference junction, choose "RTD" for the corresponding channel to which the thermo element is connected.

Fig. 2: Parameter of Electronic Module 2AI TC HF

Note:
More information on possibilities regarding temperature compensation using thermo elements on the ET 200S are available under Entry-ID: 19164525.