7. USING THE SI9500 WITH A COMPUTER
7.1 GENERAL
The SI9500 incorporates a second serial port intended for connection to a
host computer. This enables readings taken by the SI9500 to be transferred
to the computer for statistical analysis and archiving.
The data format and communications protocol are selectable and it will
require a suitably experienced person to organise and set up such a
connection. It will also be necessary to have software produced for the
computer that is capable of receiving and understanding the data from the
SI9500.
It can either be used in bi-directional or uni-directional mode. Internal
switches are used to select between RS232C, RS422 and RS485
communication standards.
7.2 COMPUTER PORT CONNECTIONS
Serial Port 2 is the 4 way connector on the side of the SI9500, see section
2.2. The pinout of this connector is shown below
A suitable 4 way plug is supplied with each SI9500.
2
1
3
4
RS232 RS422 RS485
__ _____
1 OV DO DO/RI
2 TxD DO DO/RI
__
3 CTS RI NOT USED
4 RxD RI NOT USED
LOOKING INTO SOCKET
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