Owner`s manual

M SERIES DAC

CABLING

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The cable required to connect an EIA-485 device to the V87 module using EIA-485

serial interface must have TX+/RX+ wired to the TX+/RX+ line of your equipment,

TX-/RX- wired to TX-/RX-, HSO wired to HSI (and vice versa), and the grounds

connected. Please see Figure 40.

V87 (EIA-485) Equipment

RJ-45 Connections

1 HSO HSI

2 GND GND

3 TX+/RX+ TX+/RX+

4 TX-/RX- TX-/RX-

7 GND GND

8 HIS HSO

Figure 40: V87 EIA-422 Connection

NOTE: The HSO, HSI, and GND signals do not need to be connected if you

are not using hardware handshake lines.

RJ-45 CABLES AND ADAPTERS

IMPORTANT: All RPC models have an RJ-45 port for connecting to a

local EIA-232 device such as a computer terminal or external modem. Most

serial computers do not have RJ-45 connections; therefore, an adapter is

provided with this unit to convert from a DE-9 connector to an RJ-45

connector (BayTech Part No. 9FRJ45PC-1). An adapter to convert from a

DB-25 connector to an RJ-45 connector is also available from BayTech,

upon request (BayTech Part No. 25FRJ45PC-1).