Parameterization Of The Reference Junction - Siemens SIMATIC IM 151/CPU Manual

Functions of the IM 151/CPU
5.8 Parameterization of the Reference Junction for the
Connection of Thermocouples
If you want to use the IM 515/CPU in an ET 200S system with thermocouples and
reference junctions, set the following parameters in the hardware configuration:
Table 5-13 Parameterization of the Reference Junction
CPU Module Parameter
Activation of reference
junctions 1 to 8
Module number of reference
junction 1 to module number of
reference junction 8
The module number
corresponds to the slot.
Channel number of reference
junction 1 to channel number
of reference junction 8
RTD Module Parameter
Measurement
type/measurement range
TC Module Parameter
Reference junction number
Reference junction channel 0
and reference junction
channel 1
5-18
Range
Activated/not activated You can enable the reference junction with this
parameter. Only then can you continue to
Example, see
parameterize the reference junction.
Figure 5-4
None/5 to 66 You can use this parameter to assign the RTD
module slot to the corresponding reference
junction.
Example, see
Figure 5-4
RTD on channel 0 You can use this parameter to define the
channel (0/1) for reference temperature
RTD on channel 1
measurement (determining the compensation
value) for the assigned RTD module slot.
Example, see
Figure 5-4
Range
Resistance/tempera- If you use a channel of the RTD module for
ture measurement, reference junction parameterization, you must
e.g. parameterize the measurement
type/measurement range for this channel as
RTD-4L Pt 100
RTD-4L Pt 100 climatic range .
standard range
Range
1 to 8 You can use this parameter to indicate the
reference junction (1 to 8) that contains the
reference temperature (compensation value).
None, RTD You can enable the use of the reference
junction with this parameter.
Explanation
Explanation
Explanation
ET 200S Interface Module IM 151/CPU
A5E00058783-01