Manual

5-12 SECS Scenarios
5.4 Control State
5.4.1 Host Sends On-Line Command
Assumption: Control State is "Host Off-Line". Variable GemControlState = 3.
Table 5-26 SECS Messages Host Sends On-Line Command
Step SECS Message Description
1. H -> E S1F17 W Host instructs the Equipment to go "On-Line".
2. H <- E S1F18 Equipment responds to successful On-Line transition with
ONLACK=0. Control state transits to either Local or Remonte
as guided by EC GemOnlineSubstate.
3. H <- E S6F11 W The Equipment signals CEID
GemControlState LOCAL or
GemControlState REMOTE.
4. H -> E S6F12 The Host acknowledges the event.
5.4.2 Host Sends Off-Line Command
Assumption: Control State is "On-Line".
Table 5-27 SECS Messages Host Sends Off-Line Command
Step SECS Message Description
1. H -> E S1F15 W Host instructs the Equipment to go "Off-Line".
2. H <- E S1F16 Equipment Control State transitions to "Host Off-Line"
(GemControlState = 3) and responds to primary. OFLACK = 0.