Owner's manual

3-8 Equipment-to-Host Messages
3.2.1.1 Control State Transitions
Certain state transitions will cause a collection event to be signaled. If the event is enabled, this event will
be sent to the Host along with the appropriate reports if appropriate. Table 3-5 lists the state transitions
and notes when events will be sent to the Host.
" NOTE The numbers in the # column refer to those in Figure 3-2.
Table 3-5 Control State Transitions
# From Trigger To Description
1 Unknown Power-Up Conditional This transition is made to either the Off-
Line or On-Line state, depending on the
EC INITCONTROLSTATE (VID 9).
2 Unknown Power-Up Conditional This conditional transition is governed
by the value of the OFFLINESUBSTATE
EC (VID 42).
3 Equipment
Off-Line
Operator requests
to go On-Line.
Attempt
On-Line
The Equipment will immediately send an
S1F1 to request to go On-Line.
4 Attempt
On-Line
Unsuccessful On-
Line request
Conditional This transition occurred because the
Host did not reply to an S1F1 with an
S1F2 or because the S1F1 was not
successfully sent.
5 Conditional ONLINEFAILED
Equipment
Constant
configured to
Equipment Off-
Line.
Equipment
Off-Line
Equipment will allow the Operator to
attempt to go On-Line again.
6 Conditional ONLINEFAILED
Equipment
Constant
configured to Host
Off-Line.
Host Off-Line The Equipment will accept a Host
initiated request to go On-Line by
replying to the S1F17 with ONLACK =
0x00.
7 Host Off-Line Operator requests
to go Off-Line.
Equipment
Off-Line
A Host request to go On-Line will not be
accepted.
8 Attempt
On-Line
Successful On-
Line request.
On-Line The Equipment is now On-Line.