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Instruction Manual
MX4A Active Convection Gauge
Table 5: Understanding the Sample Commands: ppse, PPSE, and Baaa
Letters
Description
pp
Mantissa of pressure
s
Sign of exponent (0 is negative and 1 is positive)
e
Exponent of pressure
PP
Mantissa of pressure
S
Sign of exponent (0 is negative and 1 is positive)
E
Exponent of pressure
B
Sign of number (0 is negative and 1 is positive)
aaa
Number between 000 and 499
Table 6: Examples for ppse, PPSE, and Baaa
Letters
Description
ppse=2412
Pressure = 2
.
4
×
10
2
ppse=8703
Pressure = 8
.
7
×
10
−
3
PPSE=3402
Pressure = 3
.
4
×
10
−
2
PPSE=5211
Pressure = 5
.
2
×
10
1
Baaa=0249
Adjustment = -249
Baaa=1382
Adjustment = 382
3.5
RS-485 Error Codes
Table 7: Error Code Explanations
Error Code
Description
0N001
Command error (invalid character command or number
after character)
0N002
Units error (invalid number received after “*0W1”)
0N003
Set point value error (invalid or out of range number after
“*0W2” or “*0W3”)
0N004
Calibration value error (invalid or out of range number
after “*0WC1”, “*0WC2”, “*0WC3”, or “*0WC4”)
0N005
Gas error (invalid characters after “*0W4”)
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mx4a_im rev L
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