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Page 198
2000-1252-01
Released Rev. C
VersaPort 2200 Technical Manual
Appendix B: Communications Software
Parallel Communication
a
(HOST)
*READY to CLOSE
(INPUT)
This signal instructs the VersaPort that the Host has completed all wafer transfers
between the VersaPort and the Process Tool, and a clear path is available for the
VersaPort to return to Home position when the
*Open/Close
command is issued.
Unless this command is active, the VersaPort will not accept any command to
perform a close cycle. Both the
*Ready to Open
and
*Ready to Close
signals
should never be active at the same time.
*OPEN/CLOSE
(INPUT)
This signal is used by the Host to initiate a remote open or close operation on the
VersaPort. The VersaPort interprets this line in conjunction with the two
host-ready lines –
*READY to OPEN
and
*READY to CLOSE
.
OPEN.
When the Host sets the
*OPEN/CLOSE
line active, the VersaPort performs
an OPEN operation if all of the following conditions are met:
• VersaPort is powered ON.
• VersaPort is configured for parallel communication.
• VersaPort is in AUTO mode.
• Pod is in place on the port plate.
• VersaPort is idle.
• VersaPort is not in the alarm state.
•
*Ready to Open
line is active.
•
*Ready to Close
line is inactive.
CLOSE.
When the Host sets the *
OPEN/CLOSE
line active, the VersaPort
performs a CLOSE operation if all of the following conditions are met:
• VersaPort is powered ON.
• VersaPort is configured for parallel communication.
• VersaPort is in AUTO mode.
• Pod is in place on the port door.
• VersaPort is idle.
• VersaPort is not in the alarm state.
• (Host)
*Ready to Open
line is inactive.
• (Host)
*Ready to Close
line is active.
Summary of Contents for VersaPort 2200
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