Multi-Tech Systems 7500, 7600 manual Configuring Digital Output, Digital Output Module

ION 7500 / ION 7600 User’s Guide Configuring Digital Output

Configuring Digital Output

Digital output ports provide access to external relays and control capabilities. For example, an ION meter’s digital outputs can provide on/off control signals for capacitor banks, generators, and other equipment.

ION meter digital output ports can also send out status signals or kWh pulses if the receiving device determines energy usage by counting pulses.

Different ION modules are used to control the hardware digital output ports in different ways. For relay and control, the Digital Output module is used. For pulsing applications, the Pulser and Calibration Pulser modules are generally used.

Each hardware digital output consists of a dry contact relay (switch) that is either open or closed. An external power supply may be required to sense whether the relay is open (no current) or closed (flowing current).

CAUTION

The digital relay outputs should never be used for primary protection functions.

For additional information regarding using the digital output ports for energy pulsing, refer to “Energy Pulsing from ION Meters” on page 232.

Digital Output Module

The Digital Output module acts as an intermediary between another module in the device and the hardware port. It takes a Boolean input and sends that out a hardware channel as a constant level or pulse. With the module setup registers, you must specify what kind of output that the module produces, and on what hardware port.

Digital Output Module Setup Registers

Setup Register	Description
Event Log Mode	Specifies whether events are logged or not (LOG ON, LOG OFF)
Polarity	Determines if the signal from the hardware is inverting or non-inverting
Pulse Width	Specifies the width of the output pulse
Ports	Defines the hardware port where the pulse or (continuous) output is sent

Digital and Analog I/O Technical Note Page 219