User's Manual

87
Document Number: 0100SM1401 Issue: 12-16
Digital I/O
The following Trio Q radios provide three dedicate Digital inputs as well as three digital outputs which can be read/written to
via TView+ Diagnostics or SNMP.
• QB Full Duplex Radio
• QH Hot Standby Full Duplex Radio
• QP Hot Standby Half Duplex Radio
Part F – Quick Reference Guide
Dry Contact
Electronic
Control
5V or
Floating
Driven Control
Typical Input Drivers
The QR150 provides two pins, dedicated for digital I/O. This I/O is user configurable, allowing each pin to be configured as
either a digital Input or a digital output.
QH / QB / QP
SNMP object descriptions for digital I/O can be found within the advanced section of this manual.
Inputs
The digital inputs for the QH/QB/QP & the QR150 have the same operational characteristics, the following input methods
can be used across either of these hardware variants.
Some form of switching contact (i.e: switch, relay) is normally used to change the state of the input. Both an isolated and
non-isolated input configuration is possible.
Typical input drivers include: dry contact (relay), electronic control or driven control. Each input can support either type of driver.
Reading the status of a user input while the circuit is CLOSED will report the input as being ON.
Reading the status of a user input while the circuit is OPEN (or not connected) will report the input as being OFF.
QR150