Edwards SCU-1600

SCU-1600 Control Unit for Turbomolecular Pump
March 10 98 Issue 1-a
5
SERIAL COMMUNICATION PROTOCOL
5.4.16 SetOptions
Function: Reads the setting value of optional function. The parameter n depends on the optional
function.
Transmission frame:
PC->SIM Stx 0 0 1 Bsp 0
Parameter 1 to n Etx LRC
SIM->PC Ack
PC->SIM Ack
SIM->PC Stx 0 0 1 # Etx LRC
Parameter Item Data format Remark
1 Optional function number 16-bits hexadecimal coded
ASCII
see Table 29
2 to n Function item
Optional function number Value Total parameter n Remark
Second speed option setting 0014 3 see 5.4.16.1
Second speed selection 0015 2 see 5.4.16.2
Table 29 - Option function number and parameter list
5.4.16.1 Second speed option 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
*1
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)
Others are refused