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STP-iXA2205 Series Turbomolecular Pump
Nov. 10
120
Issue 1-h
5
SERIAL
COMMUNICATION
PROTOCOL
Parameter
Items
Data format
Remark
1
Speed Set Point
(Unit: Hz)
16-bits hexadecimal
coded ASCII
*1
*1 When the value set to the parameter is larger than the upper limit, it is automatically set to the upper limit. When the value
set to the parameter is smaller than the lower limit, it is automatically set to the lower limit.
Example:
Speed Set Point
: 0190
hex
= 400 Hz = 24,000 rpm
Parameter
1
ASCII
0 1 9
0
HEX
30 31 39 30
5.4.13 ReadSpeedSetPoint
Function: Reads the "Speed Set Point" value. This value is the same as "ReadSetPoint" parameter 1
(Speed Set Point).
Transmission frame:
PC->SIM Stx 0
0
1
?
h Etx LRC
SIM->PC
Ack
PC->SIM
Ack
SIM->PC Stx 0
0
1 Sp h
Parameter 1
Etx LRC
Parameter
Item
Data format
Remark
1
Speed Set Point
(Unit: Hz)
16-bits hexadecimal
coded ASCII
Example:
Speed Set Point
: 012C
hex
= 300 Hz = 18,000 rpm
Parameter
1
ASCII
0 1 2
C
HEX
30 31 32 43