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Security Escort | Installation and Setup Guide |5.0 Testing

and Troubleshootin

EN | 43

Bosch Security Systems | 1/09 | 33831E

are two special displays on the Bus LEDs. All the Bus LEDs go out, and for

2-sec. a single LED is on. Walking down the display from Bus 0 to Bus 7

indicates that a Battery Test is in progress. Usually after the tamper

switch is released, the Bus LEDs count rapidly to indicate the EEPROM memory

is being updated.

5.3.2 Verifying Communications

To verify communications, press the

test feature on any transmitter. The

Test in Progress LED comes on. If it

did not come on the receivers are not

communicating with the transponder.

About a second after the Test in

Progress LED comes on, the Transmit

Data LED flashes (indicating the

transponder is sending the test

message to the central console). Less

than a second later the Receive Data

LED flashes (indicating the central

console returned an acknowledgement).

Toggling the transponder’s tamper

switch on/off causes the Transmit Data

LED to flash (indicating that the

transponder is sending the tamper

message to the central console). Less

than a second later the Receive Data

LED flashes (indicating the central

console returns an acknowledgement).

5.4 Troubleshooting Reference

Table 10: Transponder Communications with SE485 Bus

Symptoms Probable Cause Possible Solution

All transponders

on one bus in

communications

failure

1. Power to SE485.

2. Wire between SE485 and

transponder

incorrectly installed.

3. Open, short, or

grounded cable from

SE485 to first splice

or transponder.

4. Wrong cable between

SE485 and computer.

5. Bad SE485 Module.

6. Using third party RS-

485 interface

1. Check 9 VDC adapter for proper voltage. Red

Power LED should be ON (on SE485).

2. Check to make sure transmit from

transponder goes to receive of SE485 and

receive from transponder goes to transmit

on SE485 (RX+ to TX+, RX- to TX-).

3. Use VOM to test cable for short, open or

ground. Repair or replace cable. Also check

for + - pair reversed.

4. Cable should be a straight through cable to

your computer serial port connection. Do

not use null modem cable or cable marked

for printer.

5. Replace SE485 Module.

6. Due to changes made for transient

protection, transformer isolation, and link

busy detection, these signals are not

compatible with third party RS-485

Interfaces. Replace with SE485.

High

communications

error count.

1. Wire between SE485 and

transponder

incorrectly installed.

2. Wrong wire type (see

Section

3.2.1 General

Guidelines).

1. Check to make sure transmit from

transponder goes to receive of SE485 and

receive from transponder goes to transmit

on SE485 (RX+ to TX+, RX- to TX-).

2. Wire type must be twisted pair.

Single

transponder in

communication

failure.

1. Transponder not on.

2. Wrong transponder

address.

3. RS-232/SE485 switch

position.

4. SE485 wiring on

transponder.

5. Close lightning hit.

6. Bad transponder.

1. Check power switch.

2. Check DIP switch setting on transponder to

correspond with your transponder data base

setting.

3. Check slide switch on transponder to make

sure it is in the SE485 position.

4. Check to make sure transmit from

transponder goes to receive of SE485 and

receive from transponder goes to transmit

on SE485 (RX+ to TX+, RX- to TX-).

5. Power down transponder and restart. If this

does not work replace transponder.

6. Replace transponder.

Table 11: Transponder Communication with ProxLink Radio

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