Edwards SCU-1600

SCU-1600 Control Unit for Turbomolecular Pump
March 10 101 Issue 1-a
5
SERIAL COMMUNICATION PROTOCOL
Example:
Second speed setting : 00E1
hex
= 225 Hz = 13500 rpm
Second speed option setting : 0000
hex
= DISABLE
Selected speed value : 01C2
hex
= 450 Hz = 27000 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
5.4.17.2 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