MKS 651C - Page 145

Appendix F: Command and Request Reference Command Reference
131
RS-232 Command Summary
(Continued)
Command Function
Y1
value
Calibrate span of A/D converter; calibrate position output
and zeroed pressure output. The controller will assign
value
to the converter reading of the pressure channel.
Y2
Learn the full scale of the analog set point. Assigns
current value of external analog set point to the full scale
value. If the current value of the analog set point exceeds
±
15% of full scale, the controller ignores the command and
does not change the current full scale value.
L
Learn the system (Self-Tuning control)
Q
Stop the learn function (while in process)
J
value
Calibrate the valve, where
value
is:
1 = Std 253
2 = Fast 253
3 = 653
A
value
Analog set point range where
value
is:
0 = 5 Volts
1 = 10 Volts
T1
value
Set point A type where
value
is:
0 = position
1 = pressure
T2
value
Set point B type where
value
is:
0 = position
1 = pressure
T3
value
Set point C type where
value
is:
0 = position
1 = pressure
T4
value
Set point D type where
value
is:
0 = position
1 = pressure
Table 26: RS-232 Command Summary
(Continued on next page)