Vaisala WINDCAP WS425 Guide de l'utilisateur télécharger pdf (Page 56)

USER'S GUIDE____________________________________________________________________

54 __________________________________________________________________ M211095EN-C

Note for wiring RS485 for COM2

In RS485 mode, the same signals as in RS422 mode are available at the

end of Cable 2m and Cable 10m. Make two-wire loop-backs at the end of

the cable, as shown in Table 9 and Figure 24 below.

Table 9 COM2 RS485 Wiring

WMT700 Signals Wire Colors Pin RS485 Signals

RxB Green 3

TxB Yellow 4

TxRx B

TxA Brown-Green 14

RxA White-Yellow 15

TxRx A

1009-016

Figure 24 COM2 RS485 Wiring

RS485 Cable 2m and RS485 Cable 10m

These two cables are designed for the standard connection: operating

power, heater power, and RS485. The two-wire RS485 loopback

connections, as shown in Table 10 on page 55, are pre-connected inside

the cab

le.

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 135 136

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Vaisala WINDCAP WS425 Guide de l'utilisateur Page 56