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Configuration and Use Manual 61
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Chapter 7
Configuring I/O
7.1 About this chapter
This chapter discusses the following topics:
• Configuring the I/O types
• Configuring analog inputs
• Configuring analog outputs
• Configuring discrete inputs
• Configuring discrete outputs
• Configuring pulse inputs
7.2 Overview
If the Model 3711 was purchased with the built-in pressure sensors, you must configure one or two
analog inputs. These analog inputs are not part of the I/O option.
If the I/O option was purchased, six I/O channels are available on the Model 3711:
• Two channels can be used as either analog inputs or discrete inputs
• One channel can be used as either an analog output or a discrete output
• One channel can be used only as a discrete output
• Two channels can be used as either pulse inputs or discrete inputs
Typical uses of the channels are as follows:
• Analog inputs – receiving pressure or temperature data from the built-in pressure sensors, an
external sensor, an RTD, etc.
• Analog outputs – controlling a valve via a PID loop, or reporting a process variable
• Discrete inputs – monitoring the status of relays, open collector / open drain solid-state
switches, or other two-state devices
• Discrete outputs – controlling the state of external two-state devices
• Pulse inputs – receiving digital On/Off signals from an external device, then accumulating the
changes over a period of time, or determining a rate over a period of time
Configuring I/O on the Model 3711 includes:
• Configuring I/O type for each point
• Configuring I/O parameters for each point
You can configure I/O using either the Configure > I/O menu or the I/O list on the Configuration
Tree. The instructions in this chapter use the menus.
To speed configuration, you can copy and paste data.