IFM TCC5 Series, Operating Instructions Manual

6

The IO-Link interface provides the following functions:
•  Remote parameter setting of the unit� 
•  Noise immune process value transmission without measured value losses� 
•  Transmission of the parameter settings to other units of the same type or when 

the unit is replaced�

•  Simultaneous reading of the two temperature values (measuring element and 

reference element), the diagnostic output (calibration check function) and the 

device status�

•  Paperless logging of parameter sets, process values and diagnostic 

information�

5.2  Diagnostic signal

The diagnostic output is only used to provide warnings and alarms (→ data sheet 

for the maximum nominal current of the switching output)�
The switching output is closed in normal operation (normally closed)� If the unit 

detects a diagnostic case, the output opens� 
The switching logic (PnP/nPn) and the calibration check limit (ccL) from which the 

output switches can be set�
The diagnostic messages are defined and cannot be changed 

(→ 12)

�

5.3  Analogue signal

The unit converts the measured temperature value into a temperature-proportional 

analogue signal�
In addition the analogue output is used for diagnostics 

(→ 5.4 Diagnostic function)

�

The transmission of the measured temperature value is interrupted for alarms 

and an analogue signal according to NE43 of 3�5 mA (FOU2 = OFF) or 21�5 mA 

(FOU2 = On) is provided� In case of warnings, the analogue signal continues to be 

provided�
Depending on the parameter setting 

(→ 9)

 the analogue signal for values within 

the measuring range is: 

4���20 mA with setting [OU2] = I or 

20���4 mA with setting [OU2] = Ineg�