Network module for temperature sensors PT100 PT1000

Temperature measurement PT100 PT1000

The EXDUL-593E100 network module with RJ45 connection for temperature measurements has 6 temperature measurement units for the PT100 and PT1000 temperature sensors, each with its own power source and measurement inputs. The connection is made in the 3-wire circuit. This enables the module to determine and compensate for the line resistance to the sensor. The transmitter inputs for the sensors are equipped with overvoltage protection up to +/- 45. The individual sensors are measured using software commands. Both the temperature and the sensor resistance can be measured.

Digital input via optocoupler, output via optocoupler

The EXDUL-593E100 Ethernet control module has a digital optocoupler input and a digital optocoupler output with galvanic isolation. The bipolar optocoupler input is secured with an additional overvoltage protection diode. The optocoupler output, which is protected with a reverse polarity protection diode, can switch a maximum current of 150 mA.

Input can be used as a counter

If required, the optocoupler input can also be programmed as a hardware-supported 32-bit counter input. The counter can be used up to a maximum input clock of 5 kHz. In order to prevent data loss in the event of a power failure, the counter reading is saved in the module at intervals of 100 µs and automatically loaded into the counter register when the module is restarted.

Webpage

The module can be configured in a user-friendly manner via the integrated web page. In addition, a simple function test such as displaying the temperature, reading in the input status and switching the output optocoupler is also possible.

Communication via TCP/IP connection

The communication between the PC and the module takes place via the sending and receiving of byte arrays via a stable TCP/IP connection, which is protected by a handshake protocol.

Watchdog

The EXDUL module has some security mechanisms for stable communication. However, if communication is interrupted, e.g. due to routing problems, and the connection can no longer be reestablished, the module's integrated watchdog timer can be used to troubleshoot the problem.

Programmable logic

In various applications it can be advantageous if the module reacts independently to input signals or changes at the inputs. Without this option, a change at the input can only be detected by regularly querying the inputs using polling. This polling causes an increased load on the network and the computer. In order to generate this independent reaction of the module, four logic branches are provided, each with four logic inputs, a link and a logic output. This logic output can then be connected to an optocoupler output or used for messages to the PC.

Power supply

The module is supplied with the necessary operating voltage of between 10 and 30 volts via an external voltage source.

LCD display

The programmable LCD display enables the display of digital I/O status information or programmable user-specific data.

Connection and assembly

The connections for the power supply, like the connections for the sensors, the input and output optocoupler, are routed to a 24-pin screw terminal strip. The compact housing allows use as a mobile module on the notebook and as a control module in control and mechanical engineering with simple wall mounting or uncomplicated mounting on DIN EN mounting rails.

Software, drivers, programming languages

No driver is required for the EXDUL-518 Ethernet module. A prerequisite is a provided network connection from the PC (network card with driver) or mobile device. The TCP/IP libraries available in many high-level languages such as C, C++, C#, Visual Basic or Java are required for direct access to the module.

Supported operating systems and programming languages

Microsoft Windows^®

Java^®, VB.net^®, C++.net^®, C#.net^®, Python^®, Labview Tutorial^®

Linux^®

C^®, C++^®, Java^®, Phyton^®

Android^®

C#^®