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Operation
6.1
Operating the SITRANS TH200/TH300 and assigning parameters to
it
The PC is used to both assign the parameters and operate the SITRANS TH200 and
SITRANS TH300. The PC is connected to the two-wire line using a suitable modem. The
SITRANS TH300 can also be parameterized using a HART communicator. The signals
needed for SITRANS TH300 communications in accordance with the HART protocol are
superimposed on the output current in accordance with frequency shift keying. Frequency
shift keying is also abbreviated to FSK.
Measurement transmitter data and data used to assign the parameters are stored in a non-
volatile memory, the EEPROM.
Note
After the parameters have been assigned to the SITRANS TH200/TH300, do not switch the
supply voltage for the transmitter off until the device's LED flashes red or lights constantly
green.
6.2
Operation of the SITRANS TH200 with PC/laptop and modem
NOTICE
Parameters may only be assigned to the SITRANS TH200 when offline using the modem
and the SIPROM T operating software. Any 4 to 20 mA current loop connected to the
transmitter needs to be disconnected before parameters are assigned.
Procedure
1. To assign the parameters, connect the transmitter to a PC via the modem for
2. Configure the transmitter using the SIPROM T parameterization software.
The power required by the transmitter is provided:
● By the USB port on the PC for the USB modem
● By an external plug-in auxiliary power supply for the RS232 modem
SITRANS TH200/TH300
Operating Instructions, 06/2010, A5E00393069-03
SITRANS TH100/TH200/TR200.
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