Emerson Model 1700 Manual De Usuario
Options for Discrete Output Polarity
Options for Discrete Output Polarity
Table 6-9:
Polarity
Description
Active High
•
When asserted (condition tied to DO is
true), the circuit provides a pull-up to
24 V.
true), the circuit provides a pull-up to
24 V.
•
When not asserted (condition tied to DO
is false), the circuit provides 0 V.
is false), the circuit provides 0 V.
Active Low
•
When asserted (condition tied to DO is
true), the circuit provides 0 V.
true), the circuit provides 0 V.
•
When not asserted (condition tied to DO
is false), the circuit provides a pull-up to
24 V.
is false), the circuit provides a pull-up to
24 V.
Illustration of discrete output circuit
Typical discrete output circuit
Figure 6-1:
A.
24 V (Nom)
B.
3.2 K
Ω
C.
Out+
D.
Out
−
Integrate the meter with the control system
Configuration and Use Manual
97