• 16 digital input channels, 2 Ethernet ports
  • Chain Daisy-Chain with auto-bypass protection
  • Monitor and remote control with mobile devices
  • Group configuration ability to set up multiple modules
  • Flexible user-defined Modbus address
  • Peer-to-Peer and GCL smart control
  • Multi-protocol support: Modbus/TCP, TCP/IP, UDP, HTTP, DHCP, SNMP, MQTT
  • Web language support: XML, HTML5, Javascript
SKU: IOT91079 Categories: , Tag:


Brief introduction:

ADAM-6251 is a Modbus TCP module that provides 16 digital input channels, integrated with 2 additional 10/100 Base-TX Ethernet ports.

Powered by Peer-to-Peer (P2P) networking and Graphic Conditional Logic graphics, the ADAM-6251 can function as a stand-alone instrument for measurement, control and automation, as well as configurability. group to set up many other modules.

Through internet technology, this compact module can also monitor and remotely control mobile devices.

Industry standard design, support for multiple protocols Modbus/TCP, TCP/IP, UDP, HTTP, DHCP, SNMP, MQTT and XML, HTML5, Javascript, ADAM-6251 web language as an I/O solution integrated in the Ethernet control system.


Digital Input
Channels 16
Dry Contact Logic 0: Open

Logic 1: Closed to DGND

Wet ContactLogic 0: 0 ~ 3 VDC or 0 ~ -3 VDC

Logic 1: 10 ~ 30 VDC or -10 ~ -30 VDC

(Dry/Wet Contact decided by Switch)

Input Impedance 5.2 kW (Wet Contact)
Transition Time 0.2 ms
Frequency Input Range0.1 ~ 3kHz
Counter Input 3kHz (32 bit + 1 bit overflow)
Keep/Discard Counter Value when power off
Supports Inverted DI Status
Ordering Information
ADAM-625116-ch Isolated Digital Input Modbus TCP Module
Cerification CE,FCC,UL
Ethernet 2-port 10/100 Base-TX (for Daisy Chain)
LED Indication16 DI
Protocol Modbus/TCP, TCP/IP, UDP, HTTP, DHCP,


Connector Plug-in 5P/15P screw terminal blocks
Power Input 10 – 30 VDC (24 VDC standard)
Watchdog Timer System (1.6 seconds)

Communication (Programmable)

Dimensions 70 x 122 x 27 mm
Protection Built-in TVS/ESD protection

Power Reversal protection

Over Voltage protection: +/- 35VDC

Isolation protection: 2500 VDC

Power Consumption 2.7 W @ 24 VDC
Daisy chain connection with auto-bypass protection
Remote monitoring and control with smart phone/pad
Group configuration capability for multiple module setup
DI/O LED Indication
Flexible user-defined Modbus address.
Intelligent control ability by Peer-to-Peer and GCL function
Multiple protocol support: Modbus/TCP, TCP/IP, UDP, HTTP, DHCP, MQTT, SNMP
Web language support: XML, HTML 5, Java Script
System configuration backup
User Access Control
Operating Temperature-10 ~ 70°C (14 ~ 158°F)

-40 ~ 70°C (-40~158°F) (B version)

Storage Temperature-20 ~ 80°C (-4 ~ 176°F)

-40 ~ 80°C ( -40~176°F) (B version)

Operating Humidity 20 ~ 95% RH (non-condensing)
Storage Humidity 0 ~ 95% RH (non-condensing)




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