Modbus TCP/IP Devices & Sensors
Starting with firmware release "didactum-2.8.3-b333" (end of August 2021), all current Didactum IP thermometers, monitoring systems, and PDUs support Modbus TCP/IP.
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Things to know about Modbus TCP/IP
The Modbus protocol is an industrial fieldbus protocol that has become a de facto standard communication protocol since its introduction in 1979. Today, Modbus represents the standard for connecting electronic devices in industrial environments. The Modbus protocol enables communication between numerous devices, counters, and sensors within a shared network.
The SNMPv1/v2c/v3 compatible remote monitoring and control systems from the manufacturer Didactum in Münster offer the following Modbus functionalities:
1. Periodic reading and writing of information from existing devices and sensors connected to the Didactum monitoring system via Modbus TCP/IP.
2. Generation of alarms that trigger automatic actions within the networked Didactum monitoring and control system, such as... Examples include sending SMS messages, switching digital or relay outputs on the Didactum Monitoring System, or sending Modbus requests to Modbus devices when certain alarm conditions are met (e.g., when a specific register value of a Modbus client device falls below the configured alarm value).
Connecting a Modbus TCP/IP device or sensor
1. Ensure that the Modbus TCP/IP device, Modbus meter, or Modbus sensor is on the same local network.
2. Connect the IP-based Didactum measurement and monitoring system to the network switch or a suitable router using the included Ethernet cable.
3. Follow the instructions "Creating a Modbus TCP Element" to learn how to add Modbus TCP/IP devices and sensors to the web interface of the SNMP-based Didactum measurement and control device.