Ethernet module - optocoupler inputs - relay outputs

Digital inputs via optocouplers, outputs via relays

The powerful EXDUL-537E control module with 100Base-T Ethernet interface has 12 digital optocoupler inputs and eight relay outputs with galvanic isolation. The bipolar optocoupler inputs are secured with additional overvoltage protection diodes. The relays can each switch a maximum current of 2 A per channel. Contact A of the relay is connected to one terminal each, contact B is brought together on a common terminal for all 8 channels.

Inputs can be used as counters

If required, six of the 12 optocoupler inputs can also be programmed as hardware-supported 32-bit counter inputs. The counters 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 meter readings are saved in the module at intervals of 100 µs and automatically loaded into the meter register when the module is restarted.

Webpage

The module can be configured in a user-friendly manner via the integrated web page. A simple function test, such as reading in the inputs and switching the relays, is also possible.

Communication via TCP/IP connection

The communication between the PC and the module takes place by sending and receiving byte arrays via the 100Base-T Ethernet interface.

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 a relay 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 16 * 2 alphanumeric character LCD display allows 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 optocoupler and relay, are fed 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-537 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#^®