Edwards SCU-1600

SCU-1600 Control Unit for Turbomolecular Pump
March 10 81 Issue 1-a
5
SERIAL COMMUNICATION PROTOCOL
Parameter Item Data format Remark
1
Pump operation command 8-bits hexadecimal coded
ASCII
Refer to Table 23
Pump operation command Value
START 1
STOP 2
RESET 4
Table 23 - Pump operation commands
Example:
Pump operation command : RESET operation = 4 = 04
hex
Parameter 1
ASCII 0 4
HEX 30 34
5.4.4 ReadFailMess
Function: Reads the errors being detected. This data is the same data as that of "ReadModFonct"
parameter 2 to 34.
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 33
*1
Etx LRC