Edwards SCU-1600

SCU-1600 Control Unit for Turbomolecular Pump
March 10 100 Issue 1-a
5
SERIAL COMMUNICATION PROTOCOL
5.4.17 ReadOptions
Function: Reads the setting value of optional function. The parameter n depends on the optional
function.
Transmission frame:
PC->SIM Stx 0 0 1 ? 0
Parameter 1 Etx LRC
SIM->PC Ack
PC→SIM
Ack
SIM→PC
Stx 0 0 1 Bsp 0
Parameter 1 to n Etx LRC
Parameter Item Data format Remark
1 Optional function number
(receive/return)
16-bits hexadecimal
coded ASCII
see Table 30
2 to n Function items (return)
Optional function number Value Total response parameter n Remark
Second speed option setting 0014 4 see 5.4.17.1
Second speed selection 0015 2 see 5.4.17.2
Table 30 - Option function number and parameter list
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