INFICON STC-2000A Thin Film Deposition Controller Operating Manual User Manual
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STC-2000A DEPOSITION CONTROLLER
y
RS-232 Baud Rate
The
RS-232 Baud Rate parameter sets the baud rate for the RS-232 interface. It can be
programmed to one of 4 values. A value of 1 is 300 baud, 2 is 1200 baud, 3 is 2400 baud, and 4 is 9600
baud.
RS-232 Protocol
The
RS232 protocol parameter selects one of the two RS-232 protocols available. A 0 will select
the Sycon protocol and a 1 will select the ASCII protocol.
Optional: Addresses
<not implemented> If you use an optional communications card, you will need to assign bus
addresses.
Optional: Checksum Mode
<not implemented> If the optional communications card is installed, this parameter allows an
optional checksum character to be used with the message packets.
SECTION 6.4
Industrial Interface Option
<not implemented>
SECTION 6.5
Response Format
All commands received by the STC-2000A will return a response. The minimum response (not
including protocol dependent characters) is a single ASCII character. This character indicates two things.
First the success or failure of the command which was sent. One of six result types is returned, to
indicate success (AOK), illegal command token (Groups 1..16), illegal data value (number out of range for
command), illegal syntax (something other than required = sent after command token), inhibited operation
(changing the film number while depositing for instance) and I/O sequencing error.
Second, the returned response character reports the power on reset status of the STC-2000A. Each
of the four response codes (see below) is modified after a reset until the ? command resets the power failure
flag. In this way each response message informs the host as to the occurrence of an instrument reset since
the last exchange. The reason this is done is so that in every communication exchange a power on reset can
be detected and the correct exception processing be performed via host software, without special polling
overhead.
Response character
Power Lost
No Reset
Message AOK
B
A
Illegal Command
G
F
Illegal Data Value
I
H
Illegal Syntax
K
J
Inhibited Operation
M
L
I/O Sequencing Error
O
N
Table 6.2: Response Character Table.
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SECTION 6.6
Result Codes Returned: The first letter of the reply message sent from the STC-2000A to the host
computer is from the set of result codes detailed below. For each type of result one of two reply
characters is returned depending on the nature of the power up acknowledge flag of the
instrument. The second letter of the two for each type of result is returned after any previous
SECTION 6.XX
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