Emerson XEV22D Dokumentacja Pobierz pdf (Strona 28)

22 • XEV22D I&O Manual 026-1206 Rev 0 09-FEB-2011

17.3.MODBUS Termination

Blocks

Because the XEV22D device has no on-board

means of termination, use the MODBUS termination

block (P/N 535-2711) for termination that can be

wired to the end of the cable segment using the three-

pin connector. Wire the two signal wires to the out-

side terminals, and connect the shield to pin 16, keep-

ing the exposed shield wire length as short as possible

(3 inches ideal maximum length).

Figure 17-8 - MODBUS Termination Block (P/N 535-2711)

FROM OTHER

DEVICES

SHIELD WIRE

(CONNECT TO

OF DEVICE)

PIN 16

TO LAST DEVICE

AT END OF DAISY

CHAIN

1 2 ... 23 24 25 26 27 28 29 30

Brak uwag

Emerson XEV22D Dokumentacja Strona 28