1. Conventions of this Document
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Hexadecimal numbers are prefaced by ‘0x.’
2. General
This document is intended to describe the electrical and protocol specifications for the Apex
RS-232 interface port provided on the Destiny 6100 security panel.
This interface is provided to allow home control systems to obtain status information from
the security panel on a real-time basis. In addition, limited control of hardware devices
present in the Destiny panel will be allowed from home control systems.
Connection to the port is via a plug-in adapter card, optionally available for the Destiny
panel.
You can use any PC connected to the RS232 panel interface board to communicate with the
panel. You can use any software capable of sending ASCII strings through your PC’s COM
ports. Contact Apex Technical Support concerning the availability of an RS-232 demo
program.
3. Electrical/Mechanical Specifications
The panel interface board supports a full RS-232 interface in hardware. The pin-outs are
jumper selectable DTE or DCE. This application uses only GND and the TXD, RXD, and
DTR signals.
TXD and RXD are used in their normal context. The panel ignores all handshake lines when
sending data, so connected equipment must be capable of receiving continuous 1200 baud
data. Since the panel uses the same software UART for the onboard modem and the RS-232
port, the panel drives DTR false when uploading or downloading data. At these times the
panel will not communicate through the RS-232 port.
Communication settings should be 1200 baud, 8 data bits, no parity, and one stop bit. Logic
levels at the interface are standard RS-232. The interface is full duplex.
The interface board is provided with an RJ-45 connector. A female 9-pin D connector can be
added in the field (not supported). When jumpered for DCE connections, a standard pin-to-
pin male-to-female cable can be used to connect to an IBM PC serial port.
DTE vs. DCE selection
Hold the RS-232 interface board so that the RS-232 label is upright. At the right edge of the
board, approximately centered between top and bottom, is a jumper labeled “J3.” The 2 upper
posts are for DTE and the two lower posts are for DCE. In most cases, DCE is appropriate.
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