
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
56
next queued signal. In case of communication failure with the automation, the Sur-Gard receiver can store up to 255 messages
per line card in its internal memory. The communication is resumed when the first ACK is received on the heartbeat.
CPM2 Automation
Heartbeat
[ACK] 06H
Message 1 (attempt 1)
Wait up to 4 seconds…
Message 1 (attempt 2)
[ACK] 06H
Message 2 (attempt 1)
[NAK] 15H
Message 2 (attempt 2)
[NAK] 15H
Message 2 (attempt 3)
[NAK] 15H
Message 2 (attempt …)
[NAK] 15H
Message 2 (attempt 20)
[NAK] 15H
Comentarios a estos manuales