MKS 651D Series, User Manual, Page: 124 / 162

How To Select the Digital Input Functions Chapter Six: Remote Digital Logic Control
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Refer to Table 8, for the complete Interface connector pinout.
Digital Input Functions
I/O Pin No. State Digital Input Function
6 Low
High
Analog set point to position
Analog set point to pressure
7 Low
High
Softstart is active for selected
command function
Softstart is inactive for selected
command function (used in
conjunction with another valve
control function)
8 Low
High
Close the valve
No function
9 Low = Ch. 2
Hi = Ch. 1
Analog Input
Channel Select
10 Low
High
FS analog set point yields 1/10 the
FS pressure of the controlling
transducer or 10% position
FS analog set point yields FS
pressure of the controlling transducer
or 100% position
(Pressure/position function controlled
by input 6)
11 Low
High
Selects analog set point
No function
12 Low
High
Selects set point E
No function
13 Low
High
Selects set point D
No function
14 Low
High
Selects set point C
No function
Table 17: Digital Input Functions
(Continued on next page)