Siemens SITRANS T4200, Operating Instructions Manual

Page: 66 / 100

Functions
9.20 Simulation (only in SITRANS TH300)
SITRANS TH200/TH300
Operating Instructions, 06/2010, A5E00393069-03
65
9.20 Simulation (only in SITRANS TH300)
The "Simulation" diagnostic function makes it possible to receive and process (quasi)
measured data without a process value at the device. In this way, individual process
sequences are run through in "cold" status to enable process statuses to be simulated.
Furthermore, applying simulation values enables you to check the cable routing for the
analog output.
The value to be simulated can be provided as a fixed value or in the form of a ramp function.
The following simulations are possible for the measurement input and analog output:
● Measurement input:
– Fixed value simulation or ramp simulation for primary process variable
– Fixed value simulation or ramp simulation for electronics temperature
● Measurement output:
– Fixed value simulation of the analog output
The simulation of the primary process variable, electronics temperature, and analog output is
handled in the same way in terms of parameter assignment and function. For this reason,
the following will only deal with the general simulation procedures "Fixed value" and "Ramp
function", taking the example of the measurement input.
For reasons of safety, all simulation data is held only in the user memory. This means that
when the device is restarted, any simulation that may be active will be shut down.
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Figure 9-5 Block diagram of simulation