D7720 Modbus TCP/IP Ethernet Digital Output Module


The D7720 Digital Output Module contains fifteen isolated outputs for controlling relays, lamps, or annunciators and communicates using the Modbus TCP ethernet protocol. The digital outputs are open-collector transistors, can sink up to 100mA per bit and can be pulled up to 30Vdc without damage. A user-programmable Initial Value register specifies the On/Off state of each bit on power-up.

The D7720 contains a communications Watchdog Timer that can force the digital outputs to a known “safe” condition in the event of a communications failure. The “safe” state of each digital output bit is specified in the Initial Value register.

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The D7720 digital input module can be mounted on a DIN-Rail using the MK-1 mounting kit.

Out of stock

Additional information

Dimensions 7.14 × 4 × 1.5 in

• 15 Open-Collector Digital Outputs
• RJ-45 10/100Mbps Ethernet Interface.
• Modbus TCP/IP Ethernet Protocol.
• IP Address, Static or DHCP (Default).
• 500Vrms isolation.
• 15 discrete digital output bits.
• Requires +10V to +30Vdc unregulated supply, 1.0W.
• Removable screw terminal plug connectors.
• CE marked.
• Communications Watchdog Timer
• User Programmable Digital Output Initial Values


The D7720 digital output modules are compatible with all commercial software programs and OPC servers that support the Modbus TCP/IP ethernet protocol. Commercials software programs from DreamReport, Wonderware, Indusoft, DAQFactory and DASYLab all support the Modbus TCP/IP ethernet protocol. OPC Servers from Kepware and MatrikonOPC support the Modbus TCP/IP ethernet protocol.


• Process monitoring and control
• Remote data logging to any host computer
• Product testing

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