STRASBAUGH, INC.
5-8 February 19, 2002 7AF SECS/GEM Interface Ver. 1.9
Strasbaugh Confidential
13
Remote
Operator or Host
requests to go Local.
Local
EVENT: GemControlStateLOCAL (CEID
13) . Remote commands will be rejected.
Except for the REMOTE command.
14
On-Line
Operator requests to
go Off-Line.
Equipment
Off-Line.
EVENT: GemControlStateOFFLINE
(CEID 5002). A Host request to go On-
Line will not be accepted.
5.2.1.2 CONTROL STATES
The variable CONTROLSTATE (VID 257) represents the current control state, and will be one of the following values:
5.2.1.2.1 Off-Line/EQUIPMENT OFF-LINE
The Operator has put the 7AF Off-Line. In this state, the Host may not put the Equipment On-Line, only the operator can
attempt this from this state. Any Host-initiated primary message (except S1F13 and S1F17) will be replied to with an
SnF0 ABORT message by the Equipment. The Equipment will not send any primary messages except for S1F13 when
necessary to establish communications, and the S9F1 and S9F9 messages for SECS errors.
5.2.1.2.2 Off-Line/HOST OFF-LINE
While in this state, the 7AF will accept either the S1F17 (Go Online), or the S1F13 (Connect Request) message. When in
this state, the operator has allowed the Host to put the Equipment On-Line, but the Host has not yet done so, or the Host
has just put the Equipment Off-Line by sending S1F15. The Host may request for the Equipment to come On-Line by
sending the S1F17 Go Online message. The Operator can not put the Equipment On-Line from this state.
The S1F13/S1F14 messages are used to maintain the Communications Finite State Machine. All messages (except S1F13
and S1F17) received will be replied to with the SnF0 ABORT message. The Equipment will not send any primary
messages except for S1F13 when necessary to establish communications, and the S9F1 and S9F9 messages for SECS
errors.
5.2.1.2.3 Off-Line/ATTEMPT ON-LINE
The Operator has requested that the Equipment go On-Line, causing the transition to this state. 7AF sends a single S1F1,
indicating its desire to go On-Line. When either a transmission failure (here, T3 or RTY errors) occurs, or a successful
reply to the S1F1 has been received, a transmission is made out of this state.
5.2.1.2.4 On-Line/LOCAL
The local operator has control of the 7AF. The Host can send S2F41 (Remote Command), but the Equipment will reject
any commands that result in movement of the Equipment with 0x40 return code. See "6.42 S2F42 - Remote Command
Acknowledge" or section 5.7 "Remote Commands" for details.
In LOCAL mode, the Equipment continues to send Event and Alarm reports to the Host. The Host can monitor
operations, but cannot control processing. However, the Host can still exert "controls" other than S2F41 which do not
directly affect processing. For example, the Host can enable/disable Alarms and set the Clock.
5.2.1.2.5 On-Line/REMOTE
The remote Host Computer has control of the 7AF using S2F41 (Remote Command). For details see section 5.7
"Remote Commands".
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