Explanation Of Parameters - Siemens Simatic ET 200SP User Manual

4.3

Explanation of parameters

Diagnostics: Missing supply voltage L+
Enabling of the diagnostics for missing or insufficient supply voltage L+.
Diagnostics: Reference junction
Enabling of the reference junction diagnostics if the reference temperature of the reference
junction needs to be determined for the TC channel being operated.
Reference junction using the PROFINET GSD file
As reference junction for the TC measurement, a BaseUnit with internal temperature sensor
(BU..T) or the reference channel of the group 0, 1, 2, 3 can be used.
A possible parameter assignment is represented below:
Table 4- 3
Setting
Internal reference junction
Reference channel of group 0,
1, 2, 3
Fixed reference temperature
Note
Shared Device and "Reference channel of group 0, 1, 2, 3"
If the transmitter and receiver for the reference junction temperature of a group are assigned
to different IO controllers, then both IO controllers must be performing data exchange with
the IO device to ensure error-free operation of the temperature compensation.
Analog input module AI 4xTC HS (6ES7134-6JD00-0DA1)
Manual, 03/2019, A5E42405270-AB
TC channel
Description
The reference junction temperature is read by an internal tempera-
ture sensor on the BaseUnit. Diagnostics: Reference junction is
triggered if there is an incorrect BaseUnit type.
The channel acts as a receiver for the reference junction tempera-
ture of a group.
The reference temperature of the thermocouple is set to 0 °C. As a
result, no temperature compensation is performed.
Parameters/address space
4.3 Explanation of parameters
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