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Metering & Power Quality
Schneider Electric support forum about Power Meters (ION, PowerTag, PowerLogic) and Power Quality from design, implementation to troubleshooting and more.
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Is it possible to expose some kind of event or SER log to Modbus in an ION meter (7650 and PM8000)? In the simplest form, my customer would like to have Modbus registers to store the state and timestamp of the latest event on a digital input. Ideally, this data would also FIFO out.
I tried to link Store Modules to record on the input change, but it seems they do not handle high-speed inputs. Has anyone implemented this another way? Can the onboard event log be exposed to Modbus directly?
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As I remember DI will update output when there is change at input 1 cycle the store module then store status in very brief period of time but the polling of the host to the Modbus point will take longer time depends on Modbus polling interval setting.
More important Modbus does not support timestamp as I remember.
I did similar thing using DNP 3.0 with "event with time" point setting(ION8800).
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Thanks! The customer required the timestamp addition. I think we're going to use a Data Recorder Module to log change-of-state on the inputs, which can be read over Modbus. This is more complicated, but it passes the spec requirement.
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