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APPENDIX A-2: Setup Variables For Serial I/O, Revision C.3
Model 400E Instruction Manual
SETUP VARIABLE
NUMERIC
UNITS
DEFAULT
VALUE
VALUE RANGE
DESCRIPTION
O3_GEN_SET2
PPB 400 0–1500
O
3
generator high set point for range #2.
O3_GEN_DEF
PPB 400 0–1500
O
3
generator default set point.
REF_DELAY
Seconds
60
1–300
Delay before beginning O
3
generator
reference feedback control.
REF_FREQ
Seconds 12
1–60 O
3
generator reference adjustment
frequency.
REF_FSIZE
Samples 4
1–10 O
3
generator reference filter size.
REF_INTEG
— 0.1 0–10
O
3
generator reference PID integral
coefficient.
REF_DERIV
— 0 0–10
O
3
generator reference PID derivative
coefficient.
DRIVE_STABIL
mV 10 0.1–100
O
3
generator drive stability limit for
concentration cache updates.
CACHE_RESOL
PPB 2 0.1–20
O
3
generator cache un-normalized
concentration resolution.
O3_SPAN1
Conc 400 50–10000
Target
O
3
concentration during span
calibration for range #1.
O3_SLOPE1
— 1
0.850–1.150
O
3
slope for range #1.
O3_OFFSET1
PPB 0 -100–100
O
3
offset for range #1.
O3_SPAN2
Conc 400 50–10000
Target
O
3
concentration during span
calibration for range #2.
O3_SLOPE2
— 1
0.850–1.150
O
3
slope for range #2.
O3_OFFSET2
PPB 0 -100–100
O
3
offset for range #2.
DYN_ZERO
—
OFF
OFF, ON
ON enables dynamic zero calibration for
contact closures and Hessen protocol.
OFF disables it.
DYN_SPAN
—
OFF
OFF, ON
ON enables dynamic span calibration for
contact closures and Hessen protocol.
OFF disables it.
RANGE_MODE
— SNGL
0
SNGL, DUAL, AUTO Range control mode.
CONC_RANGE1
Conc
500
0.1–20000
D/A concentration range #1.
CONC_RANGE2
Conc
500
0.1–20000
D/A concentration range #2.
RS232_MODE
BitFlag
0
0–65535
RS-232 COM1 mode flags. Add values to
combine flags.
1 = quiet mode
2 = computer mode
4 = enable security
16 = enable Hessen protocol
5
32 = enable multi-drop
64 = enable modem
128 = ignore RS-232 line errors
256 = disable XON / XOFF support
512 = disable hardware FIFOs
1024 = enable RS-485 mode
2048 = even parity, 7 data bits, 1 stop
bit
4096 = enable command prompt
BAUD_RATE
— 19200
0
300, 1200, 2400,
4800, 9600,
19200, 38400,
57600, 115200
RS-232 COM1 baud rate.
MODEM_INIT
—
“AT Y0 &D0
&H0 &I0
S0=2 &B0
&N6 &M0
E0 Q1
&W0”
0
Any character in
the allowed
character set. Up
to 100 characters
long.
RS-232 COM1 modem initialization
string. Sent verbatim plus carriage return
to modem on power up or manually.
10
0
4402
Rev C.3