Edwards SCU-800

SCU-800 Control Unit for Turbomolecular Pump
MT-49E-101-G
Page 95
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
Sp
m
Parameter 1 to 80
*1
Etx
LRC
Parameter
Item
Data format
Remark
1
Pump operation mode
8-bits hexadecimal coded
ASCII
See Table 23
2
WARNING being detected
16-bits hexadecimal coded
ASCII
See Table 26
3
The number of errors detected
8-bits hexadecimal coded
ASCII
Up to 77 errors
*1
4 to 80
*1
Error 1
8-bits hexadecimal coded
ASCII
*2
…
Error 77
*1
8-bits hexadecimal coded
ASCII
*1
The maximum number of errors may differ depending upon the software version of the SCU-800. It is recommended that an
application be designed as variable-length data.
*2
Value corresponding to the error message is transmitted. (see Table 22 and Table 23)
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.