Honeywell Ademco Vista-12D, Installation And Setup Manual

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Installation and Setup Guide
6-4
Signal flow
Receiving equipment Dialing equipment
Send start char ‘w’ (77h)
←
←
Send message described above
Acknowledge ACK (06h)
→
(Delay greater than 500ms)
Send new start char ‘w’ (77h)
→
←
Send next message if available
Acknowledge ACK (06h)
…etc
•
Dialer should start sending the message no more than 200ms after start char.
•
If no response is detected the receiver retries sending start char three times (in total
four) before hanging up.
•
If the receiver reads a message with checksum error it will reply with NAK (15h),
wait more than 500ms and then send a new start char (w).
•
The receiver can optionally send a command back to the dialer after ACK.
The command may be one byte with any content except ‘w’ (77h), ACK (06h) or NAK
(15h).
.
ADEMCO Contact ID
®
ADEMCO and Robofon Contact ID
®
Reporting takes the following format:
CCCC(CCCCCC) Q EEE GG ZZZ
where:
CCCC(CCCCCC) = 4-digit or 10-digit Customer (subscriber) ID
Q = 1-digit Event qualifier, where:
E = new event , and R = restore
EEE = 3-digit (hexadecimal) Event code (see central office receiver manual
for a complete list of event codes)
GG = 2-digit Partition Number (system messages show “00”)
ZZZ = 3-digit Zone/contact ID number reporting the alarm, or user number
for open/close reports. System status messages (AC Loss, Walk Test,
etc.) contain zeroes in the ZZZ location.