i-on RangePage 138Appendix I: ARC Communication FormatsNote: To comply with EN50131 you must fit a communications module.Fast FormatFast Format is the format most widely used in the UK. When using the Fast Format, eachmessage transmitted to the ARC consists of the following:A 4,5 or 6-digit account number.8 channels of data. Each channel communicates the status of an output, asprogrammed using the ”Fast Format Channels” option (see page 107 ). The value ofthe channel can be:1 = new alarm and not previously reported2 = status of output is open/unset3 = alarm restored and not previously reported4 = status of output is closed/set5 = not in alarm6 = in alarm but previously reportedA test signal.Contact IDThe Contact ID format transmits data from the event log to the Alarm Receiving Centre(ARC). Examples of messages in the Contact ID format are:Example 1 - 1234 18 1137 01 015 21234 is the account number, as specified in Account Numbers option (page 107).18 is the message type used to identify the message as Contact ID.1137 is the event qualifier for a new event (1), followed by the event code for a systemtamper alarm (137).01 is the partition number.015 is the zone number.2 is the checksum value, which the ARC needs to verify to confirm a valid messagehas been received.Example 2 - 1234 18 3137 01 015 3The only difference between this and the first example, is the event qualifier of 3 toindicate a restore of a system tamper alarm, and the checksum value.SIA 1, SIA 2, SIA 3 and Extended SIA 3When using the SIA formats the control unit transmits data from the event log to the ARC.The four SIA formats differ in the amount of data transmitted with each message:Type FormatSIA1: #AAAAAA|NCCccSIA2: #AAAAAA|Nidnnn/rinn/CCccSIA3: #AAAAAA|Ntihh:mm/idnnn/rinn/CCcc#AAAAAA|ASExtended SIA3:#AAAAAA|Ntihh:mm/idnnn/rinn/CCcc/AS
