User Manual

tina03e1-b (2004-02) BPG400 v1.om 39
In the table "Commands and Responses" (→  40) the following variables are
used:
Variable Description Values, range,
aa Operating device
address
00 … 3F
hex
fff Emission current _25UA
5.0MA
_20MA
= 25
µA
= 5 mA
= 20 mA
modeR Gauge operation
mode, response
BPG_400_
RIG_
_ _ _ _
= BPG400 mode
= RIG mode (reduced ion
gauge mode)
modeT Gauge operation
mode, command
BPG400
RIG
= BPG400 mode
= RIG mode (reduced ion
gauge mode)
n Filament selected 1
2
No action, for future use
oo Address offset 00 … 3F
hex
rate Data transfer rate 300, 1200, 2400, 4800,
9600, 19'200 or 28'800 Baud
status Gauge status BPG mode:
BPG_ST_0
BPG_ST_5
BPG_ST_8
BPG_ST_9
RIG mode:
01_OVPRS
02_EMISS
00_ST_OK
= no error
= Pirani warning
= BA error
= Pirani error
If emission is switched off
= BA error
= normal operation
t Toggle status ON
OFF
= toggle function on
= toggle function off
unit Pressure unit MBAR, TORR, PASCAL
v.vv Firmware version of
gauge
Three characters and a decimal point. Higher
revision numbers indicate newer versions of
firmware. Example: 1.00.
x.xx Mantissa of
pressure values 1.00 … 9.99
syy Signed exponent of
pressure values
s
yy
= Sign of exponent, +/–
= Exponent
00 … 09
z Operation of relays
(switching function)
+
–
= Relay on below threshold
= Relay on above threshold
All Commands and responses are terminated by "carriage return" (CR).
All response messages contain 13 characters, including
CR.
For better readability, a space character is signified by a " _ " (underline)
character in the table below.
4.9.3 Syntax Description
4.9.3.1 Definitions, Legend