AdminS0 pulse counter with SNMP & Modbus/TCP
Case study on connecting electricity, gas or water meters to the Ethernet and reading values over the SNMP or Modbus/TCP protocols. Pulse outputs from 3rd party meters (S0 interface) are connected to the Damocles Ethernet I/O unit. Each Digital Input on the Damocles unit features a 32-bit pulse counter. The value of this counter can be read out over the web using most M2M protocols (SNMP, XML, Modbus/TCP).
Issue description:
Connecting electricity, gas or water meters to the Ethernet and reading values over the SNMP or Modbus/TCP protocols.
Electricity consumption monitoring for datacenters
S0 to SNMP conversion
S0 to Modbus/TCP conversion (most SCADA systems)
Energy consumption monitoring
Digital pulse counter
Solutions
Data center energy monitoring
S0 to SNMP conversion
Support for most SCADA systems
Digital pulse counter
Benefits
For usage with existing electricity meters with S0 pulse gen
erator
Compatible with ell S0 electricity/gas/water meters
Software HWg-PDMS converts pulses to [kWh] / [m3] / [l] and analyse consumption periodicaly
More models of Damocles with 4, 12 or 24 DI available
Technical description
The 3rd party energy meter must have a S0 pulse output.
The S0 output is connected to a Digital input of the Damocles unit. There are several models availale with 4, 12 or 24 Digital Inputs (DI). All Damocles units feature a has 32-bit digital counter on every DI.
The number of S0 pulses is directly proportional to the amount of consumed energy (e.g. 1000 pulses = 1 kWh). This ratio is specific for the particular 3rd party energy meter.
Pulse counters can be checked using the web (flash) interface of the Damocles unit.
Pulse counters for each DI (each energy meter) are available over the LAN through the following protocols:
SNMP
XML (over HTTP)
Modbus/TCP
The counters can be analyzed in the HWg-PDMS software.
PDMS collects data from all connected sensors.
In PDMS, pulses can be converted to energy (for example 1000 pulses = 1kWh)
PDMS can correctly handle device restarts and counter resets
PDMS can export energy consumption to MS Excel as a list of 5 or 15 minute differences