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[Jundle Fras]

Jundle Fras

Jundle Fras

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• Full Member
• Posts: 1

Hi Everyone,

We are looking at making a data logger to capture pulses from power and water meters. Is the 9620S Suitable for this?

In the specifications it mentions that the 9620S has up to 40 digital I/O individual configurable. Would this mean we could monitor up to 40 sources for pulses or are some of these I/O's reserved?

Is the best way to access these I/O's via a GPIO driver?

Regards,
Jundle

[mmenti]

mmenti

mmenti

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• Super Hero
• Posts: 20

Hi Jundle

I don't know for sure if any of the GPIO's are reserved. But I claim that directly connecting the pulse output of power/water meters might be a bad idea. One of the problems you might run into, what happens if you miss one ore more pulses from the source? And I bet you will miss some pulses, because this linux has no RTOS capabilities.

I would recommend some "interface logic" with "real time reading capabilites" by e.g. using an interface chip (microchip, tiny or whatever you prefer) which does the "real time" stuff and the line multiplexing. You can then connect this chip for example by simple Serial interface to the 9260S for further processing/reporting.