Edwards SCU-1601

SCU-1601 Control Unit for Turbomolecular Pump
MT-96E-1B1-0
Page 119
5
SERIAL COMMUNICATION PROTOCOL
5.4.17.1 Second speed function setting
Settings for second speed can be changed.
Parameter
Item
Data format
Remark
1
Optional function number
16-bits hexadecimal
coded ASCII
0014
hex
2
Second speed setting
(Unit: Hz)
16-bits hexadecimal
coded ASCII
3
Second speed option
setting
16-bits hexadecimal
coded ASCII
0000
hex
：DISABLE
00FF
hex
：ENABLE (parallel port operation)
01FE
hex
：ENABLE (serial port operation)
4
Selected speed value
(Unit: Hz)
16-bits hexadecimal
coded ASCII
Example:
Second speed setting
: 00E1
hex
= 225 Hz = 13,500 rpm
Second speed option setting
: 0000
hex
= DISABLE
Selected speed value
: 01C2
hex
= 450 Hz = 27,000 rpm (Normal rating speed setting)
Parameter
1
2
3
4
ASCII
0
0
1
4
0
0
E
1
0
0
0
0
0
1
C
2
HEX
30
30
31
34
30
30
45
31
30
30
30
30
30
31
43
32