Vaisala HMP243 Guia do Utilizador descarregar pdf (Página 103)

HMP240

M210300en Appendix 2: RS 485/422 serial port module

101

5. SPECIFICATIONS

Connections Berg sockets

on the main board screw terminals 0.5 mm² wires,

stranded wires recommended

Assembly plug-in module

Board dimensions 40 x 28 mm

Operating mode half duplex

(single or dual pair wiring)

Network:

network type daisy chain

cable type twisted pair

line length max. 1000 m (3000 ft)

number of devices 32 devices on line

data speed 9600 baud max. for HMP240

transmitters

operating mode polling mode

common mode voltage range ±7 V

Operating temperature -40...+60 °C

Storage temperature -40...+70 °C

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