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Technical Information
Configuration Buffer Structure
Total buffer length: 15 bytes (4 words + 7 byte)
Table 21
Offset
Unit/Res.
(byte)
0
-
1
1bit = 1mA
2
1bit = 1mA
3
1bit = 1mA
4
1bit = 1mA
5
Pressure unit
selected
7
Pressure unit
selected
9
Pressure unit
selected
11
Pressure unit
selected
12
-
13
-
Note 1: Each Set Point value is divided into 2 bytes: one for mantissa (the value is
divided by 10) and one for exponent.
Example 1: if you want to set the Set Point A to 3.5E-5 you have to write: byte offset
4 = 35d (23hex) and byte offset 5 = 5d (FBhex)
Example 2: if you want to set the Set Point A to 1.0E-9 you have to write: byte offset
4 = 10d (0Ahex) and byte offset -5 = -5d (F7hex)
222
Range
1mA to 100mA
1mA to 100mA
1mA to 100mA
1mA to 100mA
1 to 99 for mantissa
-9 to -1 for exponent
1 to 99 for mantissa
-9 to -1 for exponent
(see Note 1)
1 to 99 for mantissa
-9 to -1 for exponent
(see Note 1)
1 to 99 for mantissa
-9 to -1 for exponent
(see Note 1)
(see Note 2)
(see Note 2)
Size
Description
(byte)
1
B
→ Pressure unit ( 0= Torr, 1= mbar, 2 = Pa)
7,6
B
→ Auto power ON (0= NO, 1= Yes)
5
1
Ch1 Protect current value
1
Ch2 Protect current value
1
Ch3 Protect current value
1
Ch4 Protect current value
2
Set Point A value
The first byte is the mantissa, the second byte is the
exponent
2
Set Point B value
The first byte is the mantissa, the second byte is the
exponent
2
Set Point C value
The first byte is the mantissa, the second byte is the
exponent
2
Set Point D value
The first byte is the mantissa, the second byte is the
exponent
1
B
→ Set Point A mapping (default = 1)
7,4
B
→ Set Point B mapping (default = 1)
5,,0
1
B
→ Set Point C mapping (default = 1)
7,4
B
→ Set Point D mapping (default = 1)
5,,0
Agilent 4UHV Ion Pump Controller User Manual
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