QTech Data Systems Q26 Digital I__O Expansion Module - Manual (Page 4)

DATRAN II eXcel –Q26 Quick Start Guide – v2.0 – September 2010
RTU
+ Supply
Dig Out 1
Digital Outputs
As with the Digital Inputs, the module Digital Outputs are designed to be easily interfaced
with relays and contactors.
The module has 8 Digital Outputs in total. The first four are
located on the front panel adjacent to the Digital Inputs and have
LED indicators to show if the output is active or not. The second
four Digital Outputs are located on the underside of the module
next to the power connector, labeled “Aux Out”.
The Digital Outputs work as “Current Sinks”. This means that
when they are turned on, they will be connected to power supply
ground, allowing current to flow into the output terminal to ground.
When in the “OFF” state, they have a high impedance to ground
and will float up to + Supply.
To use a digital output with a relay, wire as shown in the diagram
Factory Presets
When you receive your Q26 IO Expansion module it will be configured with the following
settings:
RS485 Address
3 (as configured by the internal dipswitch setting)
RS485 Baud Rate 9600