SG Security Communications MLR2-E Bedienungsanleitung PDF herunterladen (Seite 4)

Form Number.: 7-3005 File Name: SG Automation Output Revision/Date: 01/May 3, 2005

Department: Engineering

Division: Embedded Software Form Template Owner: Jeff Cougler

1.0 Introduction

This specification describes protocols for the interface between signal processing computers and the Sur-Gard receivers to

report alarms to the central station computer via a TCP/IP or an RS-232 port. In all cases the Sur-Gard receiver is the master

(originator) of packets.

1.1 Port Configurations

The Sur-Gard MLR2, SLR, and MLR2E receivers use a default configuration of 1200 baud rate, one start bit, seven data bits,

one even parity bit, and one stop bit structure, to transmit and receive signals on the RS-232 port. This protocol can be

programmed on the receiver by the central station operator to enable different configurations. The data contained in the TCP/IP

protocol is identical.

The Sur-Gard MLR2000, System-II and System-III receivers use a default configuration of 9600 baud rate, one start bit, eight

data bits, no parity bit, and two stop bits structure, to transmit and receive signals on the RS-232 port. This protocol can be

programmed on the receiver by the central station operator to enable different configurations.

For receivers that can output on TCP/IP or USB the data protocol is identical.

For more details refer to the Detailed Description of the COM Ports section in this document.

1.2 General Receiver Outgoing Packet Structure

All packets originating from the receiver shall be in the following Structure.

Field Protocol ID RRLLL Data Terminator

Number of bytes 1 variable* variable 1

Example S 01002 [#1234|NBA01] 0x14 ([DC4])

The first byte is always the Protocol ID which defines the structure and length of the Data fields. All packets will contain the

terminating [DC4] byte.

*The RRLLL (Receiver and Line Number) typically by default represent the physical receiver and linecard number. On the

MLR2, SLR, and PCLC2 this field is fixed as RRL. MLR2E, System III and MLR2000 the length of this field can be changed

through options, the default is 5 bytes RRLLL. See also the RRLLL to DNIS section.

1.3 General Automation Incoming Packet Structure

The normal response that all SG receivers expect in response to an outgoing packet is a single byte ACK (0x06).

Field Type Data

Number of Bytes 1 Variable

(typically none)

Example 0x06

For all possible Automation replies see also the Automation Responses section.

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