Console Expander Configuration When Using Rs-232 Model Keyboards - Bosch LTC 8555/00 Instruction Manual

Allegiant Keyboards
A modem interface requires the cable connections below. A user-supplied cable suitable for
RS-232 communications is required.
Allegiant System
9-pin Console Port 25-pin Modem
1 (Chassis Gnd)
2 (Rx)
3 (Tx)
4 (CTS)
5 (RTS)
7 (Data Gnd)
The modem on the Allegiant side must be set to an auto answer mode, and the modem on the
keyboard side must be set to an originate mode. In some cases, modem settings are
configured via dipswitches found on the back of the modem. In other cases, the modem must
be connected to a PC for configuration. The below settings represent the dipswitch
configuration required for US Robotics Sportster modems.
Allegiant-side Modem
Dip Switch
5.3.5

Console Expander Configuration when Using RS-232 Model Keyboards

RS-232 model keyboards may be connected to an Allegiant system using the LTC 8712 Series
Console Port Expander, as shown in Figure 5.7. An LTC 8712 Series Console Port Expander
can be configured to support up to four RS-232 Keyboard connections. Other devices, such as
a PC running the Allegiant Master Control software, can be connected to the unused ports of
the Port Expander. Because the Port Expander supports only a single baud rate for the
external connections, and the RS-232 keyboards require 9600 baud, all external devices
connecting to the Port Expander must be configured to for operation at this setting.
User-supplied female
9-pin D connector.
Figure 5.7 Configuration using LTC 8712 Series Console Port Expander
On Allegiant systems with a Printer port, up to two Console Port Expanders can be
connected, supporting a total of eight RS-232 model keyboards.
Bosch Security Systems, Inc.
1 (Chassis Gnd)
3 (Tx)
2 (Rx)
8 (DCD)
4 (RTS)
7 (Data Gnd)
Tie pin 6 (DSR) and
pin 20 (DTR) together
Setting Modem Function
1 DOWN DTR Override
2 UP Verbal Result Codes
3 DOWN Display Result Codes
4 UP Echo Offline Commands
5 DOWN Suppress Auto Answer
6 DOWN Carrier Detect Override
7 DOWN Load Factory Defaults
8 DOWN Smart Mode
Allegiant system main Refer to text regarding setup of the Allegiant
CPU bay & LTC 8712 to operate in Allegiant Keyboard
LTC 8712 Expander
4 3 2 1
User-supplied cable or other link
suitable for
full duplex RS-232 transmissions
at 9600 baud
Expander pin 2 (Rx) to Tx of link or directly to pin 3 of IntuiKey's 9 pin connector
Expander pin 3 (Tx) to Rx of link or directly to pin 2 of IntuiKey's 9 pin connector
Expander pin 7 (Gnd) to Data Gnd of link or directly to pin 5 of IntuiKey's 9 pin connector
Instruction Manual
RS-232 Keyboard
25-pin Modem LTC 8557 Hookup kit Terminal
2
3
7
Tie pin 4 (RTS)
and Pin8 (DCD)
together
Keyboard-side Modem
Dip Switch
BOSCH
mode.
Prod Mon
Clr Shot
1 2 3
6
4 5
7 8 9
0
Installation | en
3
2
1
Setting
1 DOWN
2 UP
3 DOWN
4 UP
5 UP
6 UP
7 DOWN
8 DOWN
3 m (10 ft) data/
power cable
supplied with
keyboard
Junction box & power
adapter supplied with
LTC 8557 kit
F.01U.127.290 | 2.0 | 2009.03
17