Bosch Appliances Home Security System 8500 User Manual

User Selectable DIP Switch Settings for Main CPU Bay

EN | 35

Note that the pin-out of the alarm port differs from that of the console port, so 
the cable supplied with the optional LTC 8059/00 MCS package or with the 
optional LTC 8850/00 GUI Software package can not be used when interfacing 
with the alarm port. If necessary, see Section 23 “Main Bay Rear Panel Connec-
tor Pin-outs and Cable Pin-out,” on page 88 for the alarm port pin-outs.

•

Switch  3  of S1002
This switch setting is ignored if DIP switch 7 (described below) is set to ON. 
Current systems utilize a “variable speed” keyboard communication protocol. 
Older systems and keyboards were limited to using “fixed speed” keyboard 
communication protocols. In addition, there were two types of fixed speed pro-
tocols available. By default, newer CPUs are set to operate using “six poll byte” 
variable speed mode, but if a newer CPU is installed into an older system, the 
existing keyboards would not operate with this format. This option switch is 
provided to support backward compatibility with the older style keyboards. 

When this switch is set to OFF, the CPU communicates with the system key-
boards using a “four poll byte” protocol. When it is ON, the keyboard commu-
nication uses an “eight poll byte” protocol.

This option is a global system setting that determines the communication proto-
col that will be used for all keyboards connected to the system.

For reference, the following table lists the Allegiant Series keyboard models and 
the protocol supported by each:

•

Switch  4  of S1002
This switch allows the printer port on the rear of the main Allegiant bay to be 
configured as an auxiliary console port when it is turned ON. See the descrip-
tion above regarding switch 2 for information on using an auxiliary console 
port. The printer port has the same pin-out as the normal console port, so the 
console cable supplied with the optional LTC 8059/00 MCS package or with 
the optional LTC 8850/00 GUI Software package may be used to interface with 
the printer port when switch 4 is ON. Communication parameters (baud & 
handshake) for the printer port can be set using a keyboard (see User Function 
31), or with the optional LTC 8059/00 MCS package or with the optional 
LTC 8850/00 GUI Software package.

NOTE

This feature can also be implemented via the PRT2CON CCL command using 
an external PC, dumb terminal or other computing device. Refer to the Allegiant 
Command Console Language (CCL) manual for complete information about 
using CCL commands.

Keyboard model

Supported protocols