STP-iXR1606 Turbomolecular Pump
MT-79E-001-D
Page 124
5
SERIAL COMMUNICATION PROTOCOL
5.4.20 SetOptions
Function: Changes the setting value of optional function. The parameter n depends on the optional
function.
Transmission frame:
PC->SIM Stx 0 0 1 Sp 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-
ASCII
see Table 34
2 to n Function item
Optional function number Value Total parameter n Remark
Second speed option setting 0014 3 see 5.4.20.1
Second speed selection 0015 2 see 5.4.20.2
Table 34 - Option function number and parameter list
5.4.20.1 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
*1
This value can be changed in the range from half of the rated rotational speed to the rated rotational speed. When the
parameter value is larger than the rated rotational speed, it is automatically set to the rated rotational speed. When the
parameter value is smaller than half of rated rotational speed, it is automatically set to half of rated rotational speed.
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