You should consider D series Modbus RS485 Sensor Monitoring modules. Because they let you read sensing devices with spare Modbus RS485 ports for sensor measurement.
Modbus RS485 Sensor Monitoring
The D series is a versatile family of Modbus RS485 sensor monitoring modules. Because a signal range is available for many sensor measurement applications. The supply voltage range is a wide 10 to 30Vdc (DIN rail unit 5Vdc), as well as Modbus compatibility with a number of software options.
When you have spare a spare RS485 port, and need to add current measurement, use D series sensor monitoring modules. Because D series Modbus RS485 sensor monitoring modules allow the simple measurement of industry standard signals. They use the standard Modbus protocol. So you can easily connect your existing sensing devices to modern control systems. They are a simpler way to add sensor measurement to a RS485 bus than other types. Because they read common sensor signals, they are in many cases used in HVAC systems, refrigeration systems, chillers, environmental monitoring, computer room monitoring, dryer, and a variety of other applications.
When you need simple to use a Modbus RS485 sensor input module, use the D series. In other words D series Modbus RS485 sensor input modules are a simple way to add sensor measurement to a RS485 bus.
Specifications
D Sensor Inputs
Sensor types: Thermocouple, Current
Ranges: part number dependent (factory set).
Resolution: % of full scale.
Accuracy: % of full scale.
Case: ABS
Connectors: Screw terminal barrier plug (supplied).
Surface Mount: Screw threads: 6 X 32, spacing: 2.700″ (6.858 cm), with captive hardware.
Rail Mount: DIN 35mm
DIN-100 DIN rail mounted 1 sensor input modules include DIN-110, DIN-120, DIN-130, DIN-140
D1000M surface mounted 1 sensor input modules include D1100M, D1200M, D1300M, D1400M
D5000M surface mounted 4 sensor input modules include D5100M, D5200M, D5300M, D5400M