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Advantech ADAM-6251 16-ch Isolated Digital Input Modbus TCP Module
Dove Code: AQ6251 |
Manufacturer: ADAM-6251-AE


In order to fulfill ideal remote DAQ devices in IoT world, Advantech releases ADAM-6200 series, a new selection of Ethernet I/O family comprised of analog I/O, digital I/O and relay modules. ADAM-6200 series module possesses plenty of advanced features whatever the evolution of hardware design and what’s worth expecting for user is a variety of useful software functions to make it effective in the application field. With new design and strong capabilities, ADAM-6200 can be a well-integrated I/O solution in Ethernet control system.


24 Month Return to Base Warranty


  • 16-ch DI, 2-port Ethernet
  • Daisy chain connection with auto-bypass protection
  • Remote monitoring and control with mobile devices
  • Group configuration capability for multiple module setup
  • 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, SNMP, MQTT
  • Web language support: XML, HTML 5, Java Script


Digital InputChannels16
Input VoltageDry contact:
Logic level 0: close to GND
Logic level 1: open

Wet contact:
Logic level 0: 0~3 VDC
Logic level 1: 10~30 VDC
Counter Input3 kHz (32 bit + 1 bit overflow)
Dry ContactLogic 0: Open
Logic 1: Closed to DGND
Frequency Input0.1 ~ 3kHz
Input Impedance5.2 kW (Wet Contact)
Keep/Discard Counter Value when power off-
Supports Inverted DI Status-
Transition Time0.2 ms
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)
Digital OutputDelay OutputHigh-to-Low and Low-to-High
Normal Output Current100 mA (per channel)
Output Voltage Range10 ~ 30 VDC
Pulse OutputUp to 5kHz
EnvironmentHumidity (Operating)20 ~ 95% RH (non-condensing)
Operating Temperature-10 ~ 70°C (14 ~ 158°F)
Storage Humidity0 ~ 95% RH (non-condensing)
Storage Temperature-20 ~ 80°C (-4 ~ 176°F)
GeneralConnectorPlug-in 5P/15P screw terminal blocks
Ethernet2-port 10/100 Base-TX (for Daisy Chain)
LED Indicators16 DI
Power Consumption2.7 W @ 24 VDC
Power Input10 - 30 VDC (24 VDC standard)
ProtectionBuilt-in TVS/ESD protection
Power Reversal protection
Over Voltage protection: +/- 35VDC
Isolation protection: 2500 VDC
Watchdog TimerSystem (1.6 seconds), Communication (Programmable)
Dimensions (mm)110 x 60 x 27
See full manufacturer specifications