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Inficon VGC083A - 9.3 INFICON RS232 and RS485 Command Protocol Summary

Inficon VGC083A
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tinb29e1-c (2019-10) VGC083A_B.om 73
6. <CR> is a carriage return, a non-printable character. Do not enter <CR> from
your keyboard. A carriage return, non-printable character may be entered as
the Unicode C0 controls specified value: 0D hexadecimal (13 decimal). From
your keyboard, a key entry sequence of CNTL-M may be used to obtain the
required character for a carriage return when using certain terminal emulator
programs.
7. '_' represents a 'space' character. Press the space bar on your keyboard. Do
not enter a '_' (underscore) character.
8. All commands sent to the controller start with a '#' character, and all normal
responses from the controller start with a '*' character. Error responses start
with a "?".
9. A valid address must be used [Factory default = 01] when using the RS485
protocol. The VGC083 will not respond to a command with an invalid address
while using RS485.
10. The command syntax examples used in the protocol summary table for ASCII
are shown in scientific notation. However, floating point notation is acceptable
as long as a leading digit is entered as '0.' or '1.', etc. There must be a digit to
the left of the decimal point. For example, when constructing the syntax for the
command to set the CGn zero value (e.g., #xxTZn_x.xxE-pp<CR> when using
scientific notation), use either #xxTZn_0.00<CR>, or #xxTZn_0<CR>. A simple
'0' is valid for the pressure entry.
The RS232 mode is the same as RS485, except ADDRESS is ignored in RS232
mode and must be eliminated from the command string or replaced with space
characters. Responses will not return ADDRESS; the ADDRESS is replaced with
space characters. Response is 13 characters including carriage return. All pressure
measurement responses are in absolute pressure units as selected by the user.
Please see qualifying notes at bottom of table.
Table "INFICON RS232 and RS485 Command Protocol Summary"
COMMAND
BRIEF DESCRIPTION
COMMAND SYNTAX
RESPONSE - EXAMPLES
READ ION GAUGE
PRESSURE
Read the current displayed
pressure of the ion gauge in
the same units of measure
on display
#xxRDIG<CR>
e.g.: #01RDIG<CR>
where, xx = the two digit
address of the device (node)
*xx_y.yyEzpp<CR>
where,
y.yy = mantissa,
z = sign of the exponent +/-
and pp = the exponent
e.g.: *01_1.53E-06<CR>
When IG is off: *01_1.10E+03
READ CGn
PRESSURE
Read the current pressure
for CGn in the same units of
measure on display
#xxRDCGn<CR>
e.g.: #01RDCG1<CR>
where, n=1 or 2 (CG1 or CG2)
*xx_ y.yyEzpp <CR>
e.g.: *01_7.60E+02<CR>
When CG is over ranged:
*01_1.10E+03
READ AI Pressure Read the current pressure
for AI in the same units of
measure on display
#xxRDAI<CR>
e.g.: #01RDAI<CR>
*xx_ y.yyEzpp <CR>
e.g.: *01_7.60E+02<CR>
When AI is over ranged or not
powered: *01_1.10E+03
(continued)
9.3 INFICON RS232 and
RS485 Command
Protocol Summary

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