Control Solutions’ AddMe III features 18 universal inputs which are context sensitive. When configured as an analog input, the continuously self-calibrating sigma-delta converter produces 15-bit resolution with high noise immunity. When configured as a discrete input, the converter switches to 8-bit resolution at 128 samples per second for fast response. All I/O points are accessed as Modbus holding registers.

Floating point holding registers provide data from the analog I/O points. In addition, analog (universal) inputs are mirrored to integer registers and may be treated as on/off values. Linearization tables are provided for 10K and 20K type II, III, and IV thermistors. Input type and scaling is configured by writing to additional holding registers.

• 18 Analog/universal inputs
- - - 0-10VDC, Thermistor, dry contact
- - - Software selectable input type
- - - 0.1% reference, up to 16-bit resolution
- - - Continuously self-calibrating sigma-delta converter
• 4 Analog outputs
- - - 4-20mA (0-20mA)
- - - 8-bit resolution
• 8 Discrete outputs
- - - Form A relay, 5A @ 120VAC
- - - HOA switches & LED status indicators
• 2 Pulse/Discrete inputs
- - - TTL to 24VDC
- - - Rate or totalizing count input
• Modbus RTU RS-485 Slave
• Powered by 18-30VDC or 24VAC 50/60 Hz
• Power Consumption:
- - - 0.3A @ 24VDC max.
• DIN rail mounting, 100mm H x 155mm W x 60mm D
• LED indicators for power, RS-485 RX, TX & error
• Pluggable screw terminal blocks
• Operating temperature -30°C to +70°C
• Humidity 5% to 90%
• FCC Class A, CE Mark