STP-iXA2205 Series Turbomolecular Pump
Nov. 10
115
Issue 1-h
5
SERIAL
COMMUNICATION
PROTOCOL
5.4.7 ReadCounters
Function: Reads serial number, hour counter and start counter.
Transmission frame:
PC->SIM Stx 0
0
1
?
c Etx LRC
SIM->PC
Ack
PC->SIM
Ack
SIM->PC Stx 0
0
1 Sp c
Parameter 1 to 23 Etx LRC
Parameter
Item
Data format
Remarks
1 to 10
Control unit serial number
4-bits ASCII character
11 to 20
Pump serial number
4-bits ASCII character
21
Pump hour counter
(Unit: minute)
32-bits hexadecimal
coded ASCII
22
Control unit hour counter
(Unit: minute)
32-bits hexadecimal
coded ASCII
23
Start counter
32-bits hexadecimal
coded ASCII
Example:
Control unit serial number
: 12345
Pump serial number
: 6789A
Pump hour counter
: 0000003C
hex
= 60 minutes = 1 hour
Control unit hour counter
: 0000028C
hex
= 652 minutes =10 hours and 52 minutes
Start counter
: 00000064
hex
= 100 times
Parameter 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
ASCII
1 2 3 4 5
6 7 8 9 A
HEX
31 32 33 34 35 20 20 20 20 20 36 37 38 39 41 20 20 20 20 20
Parameter
21
22
23
ASCII
0 0 0 0 0 0 3 C 0 0 0 0 0 2 8 C 0 0 0 0 0 0 6 4
HEX
30 30 30 30 30 30 33 43 30 30 30 30 30 32 38 43 30 30 30 30 30 30 36 34