Click on any tab above to log in.
AddMe III contains no configuration jumpers. There is no need to open the enclosure. Analog input types are switched between voltage and thermistor inputs under software control.

I/O points should be connected as indicated in the various diagrams below. In addition to selecting a wiring diagram, the corresponding selections should be made in the I/O Devices -> I/O Setup web pages to inform software of your intentions.

IMPORTANT: Save your configuration changes to the internal file system on the System -> Setup -> Config File page. Configuration will revert back to defaults upon the next power cycle if configuration changes are not saved.

I/O Point Type
Wiring Guide
Additional Information
A/UI Analog Input:
0-10VDC
Voltage Input
AI inputs 1-18 will accept voltage inputs of up to 10VDC. Voltages to 12VDC will be measured. Voltages to 24VDC will be tolerated, but measurement is internally limited to a reading of 12VDC.
A/UI Analog Input:
0-20mA
Current Input
AI inputs 1-18 will accept current inputs of 0-20mA with the addition of a 500 ohm 1/2 watt external resistor. A 500 ohm resistor will produce a 0-10VDC signal. A 250 ohm resistor may also be used to produce a 0-5VDC signal.
A/UI Analog Input:
Thermistor Input
A/UI inputs 1-16 will accept thermistors of 3k, 10k, or 20k ohms. Linearization via interpolation of a 56-point table is performed internally.
A/UI Discrete Input:
Discrete Voltage
A/UI inputs 1-16 may be connected as discrete voltage sensing inputs. Inputs up to 24VDC are tolerated, but threshold sensing only functions over the 0-10VDC range.
A/UI Discrete Input:
Dry Contact Closure to Ground
A/UI inputs 1-16 may be connected as discrete inputs sensing dry contact closure to ground. Internal excitation of 5V @ 1mA is provided.
Discrete Output:
Open Drain FET
Current Sinking
24VDC @1.0 Amp
DO outputs 1-2 are open drain, current sinking FET outputs rated at 24VDC @ 1.0Amp.
Power
Connect AC or +DC power to Power terminal. Connect common or -DC power to GND terminal. GND is common to all terminals labeled COM.
Power consumption is 2.4 watts, or 0.1A @ 24VDC.
Communications
Connect RS-485 network to NET+/- terminals. Do not connect LonWorks to NET+/- terminals.
Communication signals comply with EIA-485 standard.
Wiring Terminals
Screw terminals ratings are substantially in excess of any I/O point ratings.

Screw terminals are pluggable. They unplug from the unit in 12-position blocks. Any combination of smaller 5.00mm terminal blocks can optionally be used instead.