Owner's manual

5-24 SECS Scenarios
5.9.2 Messages Spooled and Transmitted
Assumption: Spool State is “Spool Inactive”.
Table 5-53 SECS Messages Spooled and Transmitted
Step SECS Message Description
1. H <- E SnFn Equipment attempts to send any message to the Host.
2. After failure to deliver message, the Equipment assumes that the link
is down, and will start to spool all messages marked for spooling. The
first message spooled is the collection event “SpoolActivated”.
3. H <- E S1F13 W Equipment attempts to establish communications. This message will
repeat every “EstablishCommunicationsTimer” seconds until
successful.
4. H -> E S1F14 Communications established. Communications state transits to
“Communicating”. If COMMACK is not zero, communications are not
established and scenario proceeds at Step 3.
5. H -> E S6F23 W Host requests that Equipment begin de-spooling messages. RSDC is
zero in this message.
6. H <- E S6F24 Equipment indicates that it will start to send spooled messages with
return code RSDA = 0x00.
7. Equipment will start to de-spool messages. This process is single-
threaded. That is, when Equipment sends a de-spooled message
with the W-bit set to “1”, Equipment must be receive the Host reply
before the Equipment will send next de-spooled message. If EC
“MaxSpoolTransmit” is zero, all messages will be transmitted. If it is
set to another number, this number of messages will be sent. The
Equipment will await the next S6F23 to send the next messages.
8. H <- E S6F11 W The Equipment signals CEID GemSpoolActivated. This was the first
message in the spool if it was not over-written.
9. H -> E S6F12 Host acknowledges the start of the spool transfer.
10. Equipment will de-spool messages one at a time from oldest to
youngest until one of the following criteria is met:
1. All messages have been transmitted (go to Step 13); or
2. When “MaxSpoolTransmit” is not zero, and the messages
transmitted has reached MaxSpoolTransmit limit (go to Step 11).
Some spooled messages (usually multi-block) consist of a SECS
conversation of type “Inquire, Grant, Send, Acknowledge”. During de-
spool, if the Host rejects the Inquire, the multi-block message is
removed from the spool and not transmitted. De-spooling continues.