Alicat BB9 User Manual download pdf (Page 3)

Multi-Drop Box Operating Bulletin

Introduction

The Multi-Drop Box makes it convenient to wire multiple ow and/or pressure devices to a single

RS-232 port. The Multi-Drop Box has nine 8 pin mini-DIN ports available (the Multi-Drop Box may also

be ordered for use with 6 pin Locking Industrial Connectors). The ports are to be used either with a

standard double ended 8 pin mini-DIN (DC-62) style cable or, if so congured, a 6 pin Locking Industrial

(IC-102) style cable going from the box to each ow or pressure device.

A single DB9 D-SUB type connector (COM PORT) connects, using the included cable, to the serial

connector on a PC or laptop. All of the ow and/or pressure devices are powered via a terminal block

on the front of the box.

If more than nine devices will be required, additional Multi-Drop Boxes can be daisy chained together

with a double ended 8 pin mini-DIN (or 6 pin Locking Industrial) cable plugged into any receptacle on

both boxes. (Page 6.)

Mounting

The Multi-Drop Box can be vertically mounted in any convenient orientation or placed on a horizontal

surface where risk of exposure to liquids is minimal. To mount the box on a vertical surface, place two

screws, with heads that are not larger than about 3/16 (0.312) of an inch in diameter, 6.75” apart in a

vertical line.

Ø .340 Thru 2 Places

Ø .156 Thru 4 Places

6.75

3.463

RS-232 Multi-Drop

COM PORT

1 2 3

5 64

7 8 9

GROUND

DC POWER

RECEIVE

TRANSMIT

1 2 3 4 5 6 7

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Alicat BB9 User Manual Page 3