MKS 651C - How To Set a Process Limit Relay

How To Select Pressure or Position Control Cha
p
ter Six: Remote O
p
eration
74
How To Select Pressure or Position Control
The 651 controller is initially configured to use
pressure
control for the internal set points,
A through E, and the analog set point.
1. To select pressure or position control, issue the command:
T
x value
ENTER
where
x
= 1 for set point A type
2 for set point B type
3 for set point C type
4 for set point D type
5 for set point E type
6 for the analog set point type
value
=0 for position
1 = pressure
Note
This RS-232 command overrides the digital logic control for the analog
set point. Refer to
Digital Logic Control
, page 90, for information about
the digital logic control of the analog set point.
2. To check the type of control selected for a set point, issue the request:
R
xx
ENTER
where
xx
= 25 for the analog set point type
26 for set point A type
27 for set point B type
28 for set point C type
29 for set point D type
30 for set point E type
The 651 controller responds with the following message:
T
x value
where
x
= 0 for the analog set point
1 for set point A
2 for set point B
3 for set point C
4 for set point D
5 for set point E
value
=0 for position
1 = pressure