Simplex 2100, 2120 Installation Instructions Manual

-a

,Simplex

210012120

Multiplex Interface

Installation Instructions

DESCRIPTION

Printed Circuit Boards

A 2100/2120 interface Kit is required for each 2100 transponder which will be required to communicate with a

2120 BMUX. This kit consists of two printed circuit boards which will replace the 2100 Transmission and the
Controller boards in the 2100 transponder. The new Communications board can be identified by two yellow and
one red LED on the outside edge of the board. The new Controller board has a single green LED on it and also
contains an 87C51 microcontroller IC.

Transient Protection
A Simplex Model 2081-9027 Isolated Loop Circuit Protector is required on both sides of any communications line

that leaves the building.

Distance Restrktions
If the 2100 transponder is located more than 10,000 feet (1.9 miles) from the BMUX, a DC repeater or a modem

is required.

Related Documents

1. 2100 Multiplex Transponder Parts List MUX1 -81-002

2. 2100 Multiplex Installation Instructions 575-544

INSTALLATION PROCEDURES

Transponder Preparation

1.

2.

3.

4.

5.

Disconnect the AC power and batteries from all

transponders.

Remove the DC transmission board and the

controller board from each 2100 transponder.

l

See Figure 1 for board locations.

Disconnect all lines from the 2100 CPU and

connect them to the (replacement) 2120.

Install Model 2098-2097 Isolated Loop Circuit
Protectors on any DC communication lines that

leave the building.

(If called for) Install any repeaters or modems on

the communication line.

l

Be sure that the polarity of the communication
lines are correct. (The A and A’ lines are

positive and the B and B’ lines are negative. If

using McCulloh, the A’ and B’ terminals are the

primary connections.)

POWER SUPPLY
P.C. BD

TRANSMISSION
P.C. BD”

CONTROLLER

P.C. BD*

ENCODER
P.C. BD’S

l

THESE P.C. BOARDS TO BE REPLACED.

Figure 1

2100 Transponder

c 1999SimplexTime Recorder Co., Gardner. Mass. 01441-0001 U.S.A.

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PC Board Preparation
IMPORTANT: Use the Anti-static Kit (Part No. 553-503) when handling these boards.

Communications Board

If not operated in McCulloh (style 7) no alterations need to be made to the board. If operated in style 7, contact
Service Support at Headquarters.

Controller Board

There are three banks of dip switches on the controller board which must be configured properly for the

transponder to operate. These switch banks are read and stored by the microcontroller upon power up or when

the RESET button is pressed. If the settings are changed once the transponder is powered up, the RESET

button must be pressed or the power must be removed and re-applied for the new settings to be read and
stored.

Encoder Card Address Switch Settings (SW1 and SW2)

Dip switches on switch banks SW1 and SW2 are numbered 0 to 15 and are set ON if their number corresponds
to an encoder card address present in the transponder. These addresses are found by either (a) looking them up
on the 2100 TRANSPONDER SPECIFICATION SHEETS for the particular job being converted or by (b) reading
the jumpers on the mother board of the transponder. These four jumpers are located next to the encoder card’s
connector. (See Figure 2.) Each jumper corresponds to a bit in a four-bit address and is either a binary one by

being connected to + 12 Volts or a binary zero by being connected to GND. To determine the address, simply

add up the binary weights for each bit tied to + 12 Volts.

Example: (Refer to Figure 2)

The jumpers on the second encoder card are con-

nected as follows:

1B 4 GND
28 + +12V
48 --+ GND
88 --+ +12v

This encoder card has an address of 2 + 8 = 10.
Once the encoder card address is determined, set

the appropriate dip switch located along the edge
of the board to ON. These switches are split into
two switch banks. The first bank is next to the

reset button and is labeled EC numbers 0 to 7 for

encoder numbers 0 thru 7. The second bank is

next to the side of the board and labeled EC
numbers 8 to 15 for encoder numbers 8 thru 15.

Repeat the procedure for every encoder card in

the transponder (up to ten).

Note: If a dip switch is set for an encoder card

which does not exist, an error will be
reported. Likewise, if a dip switch is not set ’
for an encoder card present in the
transponder, an error will be reported.

According to the jumpers, the address
for the encoder in slot J2 would be

1010 in binary or address 10.

ON0

J1
. 28

1

QQQQ

1 NOC

MONITOR

NC.

QQQQ

~WJWJV~JV

POINT

IZA 328

66QQ

2ZA 4241
SEL

WJWJWJV

6088

NO.

Monitor point 1 is NC
Monitor point 2 is NO
Monitor point 3 is NO
Monitor point 4 is NC

* Make sure there are no

jumpers from 12V to
ground

NOTES:

FOR ENCODERS IN USE, EACH POINT MUST HAVE A JUMPER.
ALL ADDRESS BITS MUST HAVE A JUMPER.

Figure 2

2100 Transponder Mother Bd.

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