Edwards SCU-1600

SCU-1600 Control Unit for Turbomolecular Pump
March 10 93 Issue 1-a
5
SERIAL COMMUNICATION PROTOCOL
5.4.14 ReadModFonctWithWarning
Function: Reads the pump operation mode, errors and warnings being detected. The data of errors
being detected data is the same data as that of "ReadFailMess".
Transmission Frame:
PC→SIM
Stx 0 0 1 ? m Etx LRC
SIM→PC
Ack
PC→SIM
Ack
SIM→PC
Stx 0 0 1 Bsp m
Parameter 1 to 35
*1
Etx LRC
Parameter Item Data format Remark
1 Pump operation mode 8-bits hexadecimal coded
ASCII
See Table 26
2
WARNING being detected 16-bits hexadecimal coded
ASCII
See Table 28
3
The number of errors detected 8-bits hexadecimal coded
ASCII
Up to 32 errors
*1
Error 1 8-bits hexadecimal coded
ASCII
…
4 to 35
*1
Error 32
*1
8-bits hexadecimal coded
ASCII
*2
*1
The maximum number of errors may differ depending upon the software version of the SCU-1600. It is recommended that
an application be designed as variable-length data.
*2
Value corresponding to the error message is transmitted. (see Table 24 and Table 25)
The recent error has the largest parameter number. When the number of errors being detected is under the maximum
number, the value of parameter that is larger than the number of errors being detected is set to 0.