Sub-metering with Modbus power meters: choosing the meter and CTs
How to choose single-phase, three-phase or multi-circuit Modbus power meters, size the current transformers and pick Modbus RTU or TCP.
Bruksområder og kunnskap
Løsninger
Application guides for ICP DAS I/O, controllers, gateways and meters, sorted by the job they do.
ICP DAS makes the building blocks of measurement and control systems: remote I/O modules, programmable automation controllers (PACs), protocol gateways, power meters, sensors and IIoT edge devices. Most of them use open protocols such as Modbus RTU, Modbus TCP, MQTT and OPC UA, so they combine with each other and with PLCs, SCADA, building management systems and cloud platforms from other vendors.
The pages below are organised by application rather than by product line. Each one describes what a typical system in that area needs, which ICP DAS product groups fit, and what to check before you choose hardware. Articles with worked examples and selection guides are added to each area over time.
Løsningsområder
Nyeste artikler
Energistyring og måling
Fjernovervåking og IIoT
Local logic and alarms without a PLC: IF-THEN rules on WISE modules
How the browser-configured IF-THEN-ELSE rules on WISE modules handle local logic, logging and alarms, with a worked example and the limits.
Test, måling og datainnsamling
Thermocouple vs RTD: choosing a temperature sensor for testing
Range, accuracy, cold junction compensation, 2/3/4-wire lead resistance and response time compared, with matching ICP DAS input modules.
Miljø- og temperaturovervåking
HACCP temperature logging in cold rooms and freezers
Logging intervals, alarm delays, sensor placement and data retention for cold rooms and freezers, and which ICP DAS hardware fits each task.
Fabrikk- og maskinautomasjon
Modbus RTU vs Modbus TCP: choosing between RS-485 and Ethernet I/O
How RS-485 and Ethernet I/O differ in cabling, scan time and addressing, how to combine them with gateways, and which ICP DAS series fit.
Bygningsautomasjon
Modbus to BACnet gateways: connecting Modbus devices to a BACnet BMS
How a Modbus to BACnet gateway maps registers to BACnet objects, when MS/TP is involved, and which ICP DAS gateway fits each direction.
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