Bosch LTC 8555/00 Instruction Manual page 22

18 en | Installation
To configure an Allegiant system to operate with an LTC 8712 Console Port Expander, you
must have access to the Allegiant CPU's dipswitches, the PC-based LTC 8059 Master Control
Software, and possibly an Allegiant keyboard.
To convert an Allegiant Console port using a CPU dipswitch method, set dipswitches 3 and 4
to the ON position on CPU dipswitch S100, S1001, or S0201 (the switch number depends on
the Allegiant model being used). After a system reset (power off/on, for example), the
Allegiant's Console port is forced into the Port Expander mode, and the RS-232 data rate is
automatically set to 57,600 baud. To convert an Allegiant Console port via the Master Control
Software, connect to the Allegiant and go online. Select the Parameter tab, and then the
Options tab. Check the box labeled Set Console Port to Port-Expander mode. Download the
table into the Allegiant.
To convert an Allegiant Printer port to operate in the Port Expander mode, first configure the
Printer port to operate as a Console port. This is done by setting dipswitch 4 to the ON
position on CPU dipswitch S101, S1002, or S0202 (the switch number depends on the
Allegiant model being used). After a system reset (power off/on, for example), the Printer port
will begin to operate as a Console port. Next, use either the Allegiant Keyboard User Function
38 or the Master Control Software to change the port to the Port Expander mode. If using the
Master Control Software, connect to the Allegiant and go online. Select the Parameter tab,
and then the Options tab. Check the box labeled Set Printer Port to Port-Expander mode.
Download the table into the Allegiant.
Set the internal dipswitches of the LTC 8712 Console Port Expander as follows:
Dip Switch
401.1
401.2
401.3
401.4
401.5
401.6
401.7
401.8
402.1
402.2
402.3
402.4
402.5
402.6
402.7
402.8
1. Set this dipswitch to ON to enable handshaking if a modem is connected to the Port Expander and used
for communicating to an RS-232 keyboard. Because the Port Expander uses this setting for all external
connections, all external devices connecting to the Port Expander must be configured to operate using a
hardware handshake interface.
Remember to power the Console Port Expander off/on whenever any changes are made to its
internal dipswitches.
Connect the data cable supplied with the LTC 8712 Console Port Expander between the unit
and the appropriately configured port on the Allegiant. For further details refer to the
instructions supplied with the LTC 8712 Port Expander unit.
Using an optional LTC 8557 Hookup Kit, the RS-232 keyboard can now be connected to the
appropriate port of the Port Expander, as shown in Figure 8.
If a modem is being used, follow the same connections and configuration settings described
in the previous section when interfacing directly to an Allegiant Console port.
F.01U.127.290 | 2.0 | 2009.03
Position Comment
ON (Down) 57,600 baud for System communication
ON Handshaking enabled for System communication
OFF Reserved
OFF Reserved
ON To enable Port 1 for RS-232 Keyboard mode
ON To enable Port 2 for RS-232 Keyboard mode
ON To enable Port 3 for RS-232 Keyboard mode
ON To enable Port 4 for RS-232 Keyboard mode
OFF 9600 Baud for external communications
ON 9600 Baud for external communications
Handshake disabled for external communications
1
OFF
OFF 1 Stop Bit for external communications
OFF No parity for external communications
OFF No parity for external communications
OFF 8 data Bits for external communications
OFF Reserved
Instruction Manual
Allegiant Keyboards
Bosch Security Systems, Inc.