DATAQ Instruments, Inc.

DI-904MB/DI-905MB/DI-906MB

Multi-Channel Discrete I/O Modules
Active-High Inputs Sourcing Outputs (High-Side Switching)

Standard Modbus RTU protocol with high-speed RS-485 communication (up to 115K bps)
Twelve I/O channels in a single inch-wide unit reduces system costs and saves panel space
High-voltage, high-current, open-source outputs enable direct (high-side) control of external devices
High-voltage buffered inputs monitor discrete levels from a variety of industrial devices
Tandem input/output circuitry (DI-906MB models only) connects input buffers with open-source outputs for convenient loopback monitoring of the output state
Watchdog timers provide a configurable failsafe output state for use when host I/O communication is lost
Three-way isolation eliminates potential ground loops between power, I/O, and network circuitry
Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication.

Specifications

904MB - Discrete Input Module (Active-High)
Input: 12 channels, 0 to 35V DC range
Power: 10 to 36V DC, 24V AC
Network Communication: Modbus-RTU high-speed RS-485

905MB - Discrete Output Module (High-Side Switching)
Output: 12 channels, 0 to 35V DC range, sources current
Power: 10 to 36V DC, 24V AC
Network Communication: Modbus-RTU high-speed RS-485

906MB - Discrete I/O Module (Active-High Inputs, High-Side Switches)
Input: 12 channels, 0 to 35V DC range
Output: 12 channels, 0 to 35V DC range, sources current
Power: 10 to 36V DC, 24V AC
Network Communication: Modbus-RTU high-speed RS-485

For more complete specifications, download the Data Sheet (pdf) or the Manual (pdf).

Description	Store
DI-904MB 12-channel discrete input module.	Price: $275 US Quantity:
DI-905MB 12-channel discrete output module.	Price: $275 US Quantity:
DI-906MB 12-channel discrete input/output module.	Price: $300 US Quantity:
Note: Pricing outside the U.S. will be higher to account for shipping, taxes, duty, currency fluctuation, local warranty and technical support in your country.

Product Highlights

These modules provide twelve discrete input and/or output channels. Isolation separates the I/O, power, and network circuits. Network communication adheres to the industry-standard RS-485 Modbus RTU protocol. Both AC and DC power sources are supported with wide range, nonpolarized, diode-coupled terminals.

The outputs are intended for current-sourcing or high-side switching applications. The buffered inputs are active-high. These models are the complement of the DI-901MB, DI-902MB, and DI-903MB units which have low-side output switches and active-low inputs. Socketed pull-down resistors are easily removed or exchanged to satisfy your application requirements.? See the Circuit Connection Diagrams.

Combining flexible I/O types, wide I/O ranges, and a network interface in a single package, makes this instrument extremely powerful. Multi-channel design adds cost-efficiency and allows high-density mounting. Plus, safe, rugged construction makes these modules reliable for use in both control room and distributed field I/O applications. Custom module configurations are also possible (consult factory for details).

Everything you need to complete your network is available from DATAQ Instruments, Inc. - isolators, signal converters, signal boosters, power sources, and mounting hardware. Check out the Accessories.

DI-904MB/DI-905MB/DI-906MB

Multi-Channel Discrete I/O Modules Active-High Inputs Sourcing Outputs (High-Side Switching)

Specifications

Product Highlights

Multi-Channel Discrete I/O Modules
Active-High Inputs Sourcing Outputs (High-Side Switching)