Hanna-instruments HI 504903 Bedienungsanleitung PDF herunterladen (Seite 29)

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APPENDIX

SECTION 3: RS232 AUXILIARY PORT

HI504903 is provided with an auxiliary RS232 port (D-Sub

9-pole female plug) for connection to a local PC using an

HI920010 Hanna cable.

If the provided HI920010 Hanna cable is too short for your

application, it is possible to make a longer communication

cable (up to 15 m long) by following the below table for pin

connections.

PC side

female connector pin

HI504903 side

male connector pin

SECTION 1: CONNECTING THE HI142 NETWORK TO HI504903

For connecting the first HI142 datalogger to the HI504903

interface, make a cable for both RS485 and power supply

connections.

A 4-wire cable and an RJ11 jack (male connector) are neces-

sary, then follow the below diagram:

SECTION 2: CONNECTING HI142 TO HI142

For connecting one HI142 datalogger to the next one, make

a cable as explained on the below diagram, by using a 4-

wire cable and two RJ11 jacks (male connectors):

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Hanna-instruments HI 504903 Bedienungsanleitung Seite 29