Required Transmitter Configuration

Table 4-9Discrete output polarity

Polarity

Output power supply

Description

 

 

 

 

 

 

 

Active high

Internal

• When asserted, the circuit provides a pull-up to 15 V.

 

 

 

 

 

 

• When not asserted, the circuit provides 0 V.

 

 

 

 

 

 

 

 

 

 

 

 

External

• When asserted, the circuit provides a pull-up to a site-specific

 

 

 

 

 

 

voltage, maximum 30 V.

 

 

 

 

 

 

 

 

 

 

 

 

• When not asserted, circuit provides 0 V.

 

 

 

 

 

 

 

Active low

Internal

• When asserted, the circuit provides 0 V.

 

 

 

 

 

 

• When not asserted, the circuit provides a pull-up to 15 V.

 

 

 

 

 

 

 

 

 

 

 

 

External

• When asserted, the circuit provides 0 V.

 

 

 

 

 

 

• When not asserted, the circuit provides a pull-up to a site-specific

 

 

 

 

 

 

 

 

 

 

 

 

voltage, to a maximum of 30 V.

 

 

 

 

 

 

 

Figure 4-8Discrete output circuit 15 V (Nom)

3.2 Kohm

Out+

Out–

The discrete outputs can be used to indicate a fault, to indicate filling in progress, or to control the primary or secondary valves, as described in Table 4-10.

Note: Before you can assign a discrete output to valve control, the Fill Type parameter must be configured. See Chapter 7 and Figure 7-3.

Before You Begin

Using ProLink II

Flowmeter Startup

Required Configuration

Configuration and Use Manual

27

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Emerson Process Management 1500 manual 9Discrete output polarity, Polarity Output power supply Description

1500 specifications

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