STP-iS2207 Series Turbomolecular Pump
MT-89E-001-C
Page 125
5
SERIAL COMMUNICATION PROTOCOL
Example:
Second speed setting : 0190hex = 400 Hz = 24000 rpm
Second speed option setting : 0000
hex
= DISABLE
Selected speed value
: 0260hex = 608 Hz ≒ 36500 rpm (Normal rating speed setting)
Parameter
1 2 3 4
ASCII
0
0
1
4
0
1
9
0
0
0
0
0
0
2
6
0
HEX
30
30
31
34
30
31
39
30
30
30
30
30
30
32
36
30
5.4.21.2 Second speed select
The speed setting set as rotational speed in the normal state can be read.
Parameter
Item Data format Remark
1 Option function number
16-bits hexadecimal
coded ASCII
0015 hex
2 Second speed selection
16-bits hexadecimal
coded ASCII
0000 hex: Normal rating speed setting
0001 hex: Second rating speed setting
Example:
Second speed selection : 0000
hex
= Normal rating speed setting
Parameter
1 2
ASCII
0
0
1
5
0
0
0
0
HEX
30
30
31
35
30
30
30
30