Procedure For Communications With Hht - Toshiba LF620 Instruction Manual

11.2 Procedure for Communications with HHT

This section describes the HHT basic operation procedure for communications between the flowmeter
and HHT. For details, refer to the HHT instruction manual.
* The following procedure makes a commercially available PDA (OS: Windows Mobile) serve as a
HHT.
Procedure
①Prepare a hand-held terminal (1)
②Prepare a hand-held terminal (2)
③Connect
④Start
⑤Preliminary communication
⑥Check/change data
⑥Exit the communication
Converter terminal block
Figure 11.2 Connections to the Converter Unit
Operation
Install the AF900 application software to a commercially available PDA (OS:
Windows Mobile) main unit. Then insert the serial interface card supplied with
AF900 to the card slot of the PDA.
Connect the HART interface cable and serial interface card supplied with
AF900 to each other.
Connect the alligator clip at the head of the HART interface cable to the current
output line of the converter via a load resistor.
Turn on the power supply of the PDA to start the AF900 application software.
Execute [sensor communication]. The model of the connected sensor product
is automatically identified and the converter menu screen appears.
Press the relevant parameter button and check/change data.
When all operations are complete, press the [Exist Application] in the top
screen to turn off the power supply of the PDA.
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6 F 8 A 0 9 2 7
HTT connection cable and clips
HHT