Pyramid DC Receiver Manual de instalación descargar pdf (Pagina 12)

Page 12

Pyramid DC Receiver Installation Manual

PY-COM NETWORK CARDS

If a PY-COM network card is fitted to the DC receiver, it can be configured by means of dip switches for use in both RS485

and RS422 networks. The dip switches for the different network types are shown below:

RS485 Mode

RS485 networks are 2-wire, bus-connected (also referred to as daisy-chain). In RS485 mode, the dip-switches on the

PY-COM will be set differently depending on where the unit is placed on the network. If the unit is the first or last in the

network, one network card in the unit will need to be set to provide biasing and termination as required. If the unit is central

to the network, all network cards will be set for use in a intermediate module.

Set the switches as required and wire the card to the network as shown in Figure 10. It is not necessary to make any

connections to the filter board.

87654321

First Module

Intermediate Module

Last Module

White represen

switch position

Not usedNetwork Not usedNetwork Not used

Network

Figure 10 - RS485 Switch Settings

RS422 Mode

RS422 networks use a 4-wire, point-to-point connection methodology. Set the switches as required and wire the card to

the network as shown in Figure 11. It is not necessary to make any connections to the filter board.

876543

Input

Output

White represen

switch position

Figure 11 - RS422 Switch Settings

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Sin comentarios

Pyramid DC Receiver Manual de instalación Pagina 12