Black Box ACS201A Instrukcja Użytkownika Pobierz pdf (Strona 5)

Integration Note

The connectors on the converters mentioned above are a 4 point terminal block on the RS-

422/485 side and a 25-pin female D connector on the RS-232 side. The RJ-11 cable from DVT

must be wired directly to the terminal block and an ABB-DB25 Male connector must be ordered or

constructed as in figure 3 (simply connect transmit, receive and ground wires.) The converters

can be configured as a DCE (Data Communications Equipment such as a PC) or DTE (Data

Terminal Equipment, devices such as Bar code readers). The default configuration is DTE; so

transmit and receive lines are crossed at the terminal block. See Figure 5.

RS-422/485 to RS-232

converter

PIn No. Signal

1 5V

Tx+

Rx-

Rx+

Tx-

GND

TxA

RxB

RxA

TxB

RJ-11 Connector on

DVT 600 System

ABB Serial Port

Connector

D25

male

D25

female

to 115 VAC

Terminal

block

54321

6 7 8 9

Figure 5: Connections with Externally Powered BlackBox Converter

B&B Electronics manufactures an externally powered converter with terminal block connectors on

the RS-422 and DB9 or DB25 connectors on the RS-232 side. It comes with an optional 110VAC

to 12V DC transformer that provides power to 2 terminals in order to enable the driver. The price

of this converter is around $70 in a very small package; one drawback is that it does not provide

opto-isolation. The part number is 422LPCOR . For more information visit www.bb-eec.com

RS-422/485 to RS-232

converter

PIn No. Signal

1 5V

Tx+

Rx-

Rx+

Tx-

GND

TD (A)

RD(B)

RD(A)

TD(B)

ABB Serial Port

Connector

D25

male

D25

female

Terminal

block

12V

to 115 VAC

543

6 7 8 9

Figure 6: Wiring for B&B electronics converter.

1 2 3 4 5 6 7 8 9 10

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