| Part of the family of I/O expansion modules for the PICOSERV miniature web server system, the Analogue 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. |
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| Analogue I/O Interface Module |
The analogue I/O module stacks directly onto the PICOSERV server module to provide a ‘no development’ route to providing four analogue 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 timequalified, adjustable threshold alarm status. Up to eight analogue I/O modules can be configured in one system, providing up to 32 analogue inputs.
Analogue Inputs
Four analogue 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 analogue inputs have a programmable offset of +/- 9.999V or +/-999.9oC, depending on the input mode selected.
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| I/O Modules Simply Stack Onto The Server Module |
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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. Analogue 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. |
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