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Troubleshooting/Maintenance
7.1
Troubleshooting
Explanations for troubleshooting minor faults are given below.
Cause of error
The Power LED does not illuminate.
For the USB modem: The USB cable is not
connected.
For the RS232 modem: Power adapter is not
connected to the modem.
Hardware error has occurred.
The Power LED blinks during the parameterization of the
transmitter.
No transmitter connected.
The Comm LED does not illuminate.
For the USB modem: Modem is not detected by the
PC.
For the RS232 modem
RS232 not connected with the PC.
Modem is not detected by the PC.
The Error LED illuminates during the parameterization of
the transmitter.
Short circuit at the modem terminals for the
transmitter.
The Error LED illuminates continuously.
Hardware error has occurred.
7.2
Maintenance
The modem for SITRANS TH100/TH200/TR200/TF200/TF with TH200 is maintenance-free.
Modem and SIPROM T for SITRANS TH100/TH200/TR200/TF200/TF with TH200
Operating Instructions, 06/2014, A5E00468983-04
Remedy
Connect the USB cable.
Connect the power adapter and check.
Replace the device.
Check whether the transmitter is connected with the modem
with correct polarities or whether the loop current is at least
3.5 mA.
Check the port settings in SIPROM T; Check the driver
installation and reinstall SIPROM T if required.
Connect RS232 with the PC.
Check the COM port settings in SIPROM T.
Check the wiring of modem terminals.
If the Error LED remains illuminated even after repeatedly
switching the power supply of modem on and off, the device is
defective and must be replaced.
7
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