Bosch Appliances LTC 8540/00 4.3Allegiant CPU Bay Connections, 4.4Operational Settings, En

LTC 8540/00 Series Instruction Manual Installation

4.2.2 Desk Top Mount

If the unit is not going to be rack mounted, the enclosure’s mounting ears should be removed. The cover of the unit must be removed before access to the mounting ears is possible. Removal of the cover should only be performed by qualified service personnel. The unit should always be disconnected from the Allegiant CPU bay (or alternate power source if one is being used) before removing the cover.

The top cover is fastened to the case by 4 screws located on the rear of the unit. Once the screws have been removed, the cover slides back and off the unit. Remove each mounting ear by removing the screw holding the mounting ear to the enclosure chassis. Refer to the drawing below if needed.

S929A39AE

Cover and Rack Ears Removal

4.3Allegiant CPU Bay Connections

With the power turned “OFF” on the Allegiant series main CPU bay, install the alarm interface unit in the rack close enough to the location of the main CPU bay to allow the supplied cable to be used.

Connect one end of the supplied 9-pin D-type cable labeled “ALARM” to the rear of the unit and the other end to the Allegiant main CPU bay connector marked “ALARM”. Remember to tighten both connector attachment screws at each connection point. The front panel LED should light upon application of power to the main CPU bay.

EN 8

4.4Operational Settings

The unit contains internal DIP switches which can be used to set certain operating characteristics. The lid to the unit must be removed as described above if the DIP switches need to be changed from their Factory default settings. Refer to the LTC 8540/00 table below for DIP locations. The following tables summarize the DIP switch settings and their associated features:

LTC 8540/00

S103 - DIP	Function
Switch No.
1	ON for alarms 1 to 32 as normally open (NO).1
	OFF for alarms 1 to 32 as normally closed (NC).
2	ON for alarms 33 to 64 as normally open (NO).1
	OFF for alarms 33 to 64 as normally closed (NC).
3	ON for alarm output relays as normally open (NO).1
	OFF for alarm output relays as normally closed
	(NC).
4	ON for audible buzzer enabled.1
	OFF to disable audible buzzer.
S101 - DIP
Switch No.	Function
4	ON for RTS/CTS enabled.
	OFF to disable RTS/CTS.1

1Denotes Factory default settings.

The unit communicates with the Allegiant main CPU bay using RS-232. The first three switches of DIP switch S101 are used to select the desired baud rate. Refer to the LTC 8540/00 layout diagram below for locations. Follow the table if a change from the Factory default setting is required.

Note that the Allegiant CPU bay must also be set to the same baud rate.

LTC 8540/00

S101 - DIP Switch No.			Baud
1	2	3	Rate
OFF	OFF	OFF	192001
OFF	OFF	ON	9600
OFF	ON	OFF	4800
OFF	ON	ON	2400
ON	OFF	OFF	12002
ON	OFF	ON	600
ON	ON	OFF	Not Used
ON	ON	ON	Not Used

1Denotes Factory default settings on units starting with serial No. 1500.

2Denotes Factory default settings on units below serial No. 1500.

Bosch Security Systems December 13, 2007