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Section 4
4.1 Operation model
V700-L21
User's Manual
Section 4
SECS Protocol Specifications
4.1 Operation model
Set the MODE switch to 0 position, and power UP the CIDRW system. The CIDRW system is then initialized,
and then acts according to the state models defined in SEMI E99.
(1) CIDRW state model
OPERATIONAL status
OPERATING
The system is running in operating mode.
IDLE No service is performed on any head.
BUSY A service is performed on any head.
MAINTENANCE
The system is running in maintenance mode.
* The service will vary by change of state commanded by the host.
ALARM status
NO ALARMS
No alarm condition exists on the CIDRW controller and all the con-
nected heads.
ALARMS
An alarm condition exists.
• In the head detection process during initializing, a faulty head has
been detected or no head has been detected at all.
(This state is cleared only when the system is powered OFF and ON
again, and correct head connection is detected.)
• During data transaction with an ID tag, a faulty head has been
detected.
(Correct state is automatically restored when in the ensuing action,
the faulty state is found to have been cleared.)
• Internal error on CIDRW controller has occurred.
INITIALIZING
A state where after powering UP, the CIDRW is initializing or detecting
heads, before the CIDRW system can function as intended.
(2) IDRW head state model
OPERATIONAL status
OPERATING
The head is normally running.
IDLE No service is performed on any head.
BUSY A service is performed on any head.
NOT OPERATING
The heads (IDRW heads, link units) needs to be checked for correct
functioning.
* The alarm status with CIDRW is ALARMS.
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