Edwards SCU-1600

SCU-1600 Control Unit for Turbomolecular Pump
March 10 89 Issue 1-a
5
SERIAL COMMUNICATION PROTOCOL
Parameter Item Data format Remark
1 Motor temperature
(Unit: ºC)
16-bits hexadecimal coded
ASCII
Example:
Motor temperature : 0014
hex
= 20 ºC (68 ºF)
Parameter 1
ASCII 0 0 1 4
HEX 30 30 31 34
5.4.10 ReadStatus
Function: Reads various settings (Remote mode, TMS function, INHIBIT, Emergency vent valve).
Transmission frame:
PC->SIM Stx 0 0 1 ? f Etx LRC
SIM->PC Ack
PC->SIM Ack
SIM->PC Stx 0 0 1 Bsp f Parameter 1 to 4 Etx LRC
Parameter Item Data format Remarks
1 Remote mode setting 8-bits hexadecimal
coded ASCII
Refer to Table 27
2 TMS function setting 8-bits hexadecimal
coded ASCII
00
hex
: ENABLE
Excluding 00
hex
: DISABLE
3 INHIBIT setting 8-bits hexadecimal
coded ASCII
00
hex
: ENABLE
Excluding 00
hex
: DISABLE
4 Emergency vent valve setting 8-bits hexadecimal
coded ASCII
00
hex
: ENABLE
Excluding 00
hex
: DISABLE