Safeline Signature Operating And Instruction Manual page 162

Fig 31 Event driven message interrupting normal ack/nak response to the host
T
i
m
e
146
HOST
T0, 1, 55, ...
Dnnn,xxx
ACK
ACK
APPENDIX D
DETECTOR
Event
(E.g. Detection, fault)
Event
Host command and
message
detector response.
4618-021