Whelen Engineering Company E-2010, Руководство по эксплуатации и установке

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Communication Protocol
The standard communication protocol for Whelen’s High Power Voice and Siren System products is a 10
digit DTMF (Dual Tone Multi-Frequency) format. This means that the activation command consists of
ten DTMF digits. The status feedback from a remote siren may have from 10 to 18 digits, depending on
the type of feedback status.
The activation command structure is as follows:
Digits 1-3 = System Area Code
Digits 4-7 = Remote Siren Address Code
Digit 8 = Identification Number
Digit 9,10 = Command
Area Code
Each warning system receives a factory assigned area code. Consideration is given to frequency
allocations to minimize the chance of false activation from a neighboring system.
Remote Siren Address Code
Each remote siren within a system is assigned a unique address. In order to accept a command string, the
remote siren must receive the proper area code and address in the proper order, in a certain time span. A
remote siren will reject any command string that does not meet these requirements.
System “all calls” are permitted through the use of the # symbol (or wildcard). The # may be used in all
four address digits to communicate with all remote siren within the area code or the # may be used in
specific positions to communicate with a group of remote sirens. The # may not be used in the area code.
Identification
The eighth digit identifies which Control Center transmitted the command. There may be up to eight
centers within a system.
Command
These digits define the command. This information is provided for reference only, since in the E-2010 all
commands are selected by name and all response strings are decoded into specific names.
(Do not confuse this with the Command Table used in Call Key programming.)