PP1003-V00 - PicoServ Analogue I/O Module

Part of the family of I/O expansion modules for the PICOSERV miniature web server system, the Analog I/O Expansion Module provides a simple means of interfacing 4 Analogue inputs, 4 digital outputs, 4 digital inputs and an ambient temperature sensor to the web server or SMS modules. Real world input or output signals connected to the expansion module are easily displayed or changed in any web browser using only simple HTML commands.

The analog I/O module stacks directly onto the PICOSERV server module to provide a ‘no development’ route to providing four analog input signals, four logic level digital inputs, four logic level digital outputs and an on-board ambient temperature sensor. Additionally all inputs can be assigned to a time qualified, adjustable threshold alarm status. Up to eight analogue I/O modules can be configured in one system, providing up to 32 analogue inputs.

Analog Inputs

Four analog input ports which can be software (browser) configured to operate in one of three different modes.

• Mode1 - 0-4V input with a 4mV resolution.
• Mode2 - 0-2V input with a 2mV resolution.
• Mode3 - Temperature Measurement input with a 0.2oC resolution when using a 10mV/oC sensor.
• Mode4 - Temperature measurement input for PT100 sensors. 0.5oC resolution -100oC to +300oC

All analog inputs have a programmable offset of +/- 9.999V or +/-999.9oC, depending on the input mode selected.

I/O Modules Simply Stack Onto The Server Module

Digital Outputs

Four logic level output signals, capable of sinking or sourcing 25mA per output.

Digital Inputs

Four logic level digital inputs protected to +/- 30VDC

Alarm Status

All input ports have a programmable alarm status with optional time qualification from 1 to 9999 seconds. Analog ports have separate high and low alarm thresholds programmable between +9.999V and 9.999V or +999.9oC and -999.9oC, depending on the input mode selected.