Released Rev. C 2000-1252-01 Page 165
VersaPort 2200 Technical Manual
Appendix B: Communications Software
SECS Communication
a
5: Use ASCII serial communication, checksum mode.
Default: 0.
CASSETTE SIZE OPTION (ECID 39)
This option configures the VersaPort to operate as a 200mm Pod. Default value of the
cassette size option is 0 (200mm Pod). The value must be set in accordance with the
actual cassette being used.
0: Standard 200mm
Default: 0.
DEVICE I.D. (ECID 40)
The VersaPort device I.D. is used in the SECS message to identify the source of the
message. When multiple VersaPorts are controlled by a single Host, it is necessary to
assign a unique device I.D. to each VersaPort for identifying from which VersaPort a
SECS message was originated. The device I.D. of an VersaPort can be configured to any
value between 1 to 65535.
Default: 251.
BAUD RATE (ECID 41)
This option allows a Host to modify the VersaPort serial communication baud rate through
the HOST/Equip port and ASCII port. Four baud rates are available:
2400 baud
4800 baud
9600 baud
19200 baud.
Default: 9600 baud.
SECS COMMUNICATION TIMEOUT T1 (ECID 50)
This option specifies the maximum time delay tolerated between characters within a
SECS data block. If the SECS message receiver fails to receive an expected character
within T1, it will respond with a NAK (Hex 15) and the data received so far will be
discarded.
Acceptable range: 0 – 3 (sec). 0 means 0.1 sec (specified in ACOMLIB).
Default: 1 (sec).
SECS COMMUNICATION TIMEOUT T2 (ECID 51)
This option specifies the maximum time delay tolerated between sending an ENQ (Hex
05) and receiving the EOT (Hex 04) response, or between sending a data block and
receiving the ACK (Hex 06) or NAK (Hex 15) response, or between sending an EOT and
receiving the first message character. When T2 expires, it is assumed that nothing is
received.
Acceptable range: 0 – 25 (sec). 0 means 0.4 sec (specified in ACOMLIB).
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