Remote Digital I/O over your Ethernet!

• 32 digital I/O channels support
  normal, counting, latch, pulse,
  and square wave modes

The Digital I/O Ethernet Data Acquisition System is a low-cost member of a family of data acquisition products that communicate with PCs and other computers over Ethernet and Internet networks. They utilize the open systems environment of Ethernet to acquire data from any number of remote locations. Data can then be made available for use by other networked resources or for further processing by plantwide software and/or databases, including your Intranet or Internet information pages.
Open System
EDAS units communicate over any Ethernet network (LAN) using industry-standard TCP/IP protocol, providing a non-proprietary interface to virtually any host. Each EDAS unit has a TCP/IP stack built-in and receives its own unique network IP address configured through the on-board RS-232 serial port.

Digital I/O
Each Digital EDAS provides 32 digital I/O channels, programmable in four byte-wide (8-bit) sections, or ports. Each digital port is TTL-level compatible and can be independently programmed for input or output. Through local signal processing, various digital input/output functions are supported. Inputs can be used to read the current status of digital signals, detect digital signal state-changes (latch a state), and count signal state-changes for low speed counting applications (less than 250 Hz). Outputs can operate in simple on/off fashion, or can be programmed for specific delay times and on/off times for control and timing applications. In addition, eight of the digital output channels can be individually configured for predetermined output states at power-up. All inputs and outputs are protected from damage under power on or power off conditions.

High-Speed Counters
Two 16-bit general-purpose programmable counters capable of counting TTL level signals up to 250kHz are also provided. Counter inputs are made available by multiplexing them with two digital input lines.

Serial I/O
EDAS systems also feature serial I/O capability. In addition to IP address configuration, the onboard RS-232 port can be used for interfacing to RS-232 devices. When the port is in "Command" mode, EDAS can monitor and control any device with RS-232 connectivity, including terminals, barcode scanners, instruments, scales, gauges, smart sensors, and machines.

EDAS systems are availiable with optional RS-485 port. These units can monitor and control any number of instruments, sensors and machines over a RS-485 network.

Data Retention
The Digital EDAS protects your data in the event of a power outage. After power is lost, the unit will retain state and count values on each channel for up to five days.

Operation
EDAS units act as application servers, providing I/O functions to clients on the network. They operate in both synchronous and asynchronous mode. In synchronous mode, a client polls the unit for digital input values and counter data, or to set output values. Asynchronous mode allows the unit to send data based on change-of-state or alarm conditions.

OEM Version
OEM Versions of EDAS systems are available to those who wish to incorporate this innovative design into a larger system. These "board-only" versions come without the rugged external case, allowing the circuit board to be mounted in an enclosure of your choice.

• Compact efficient design
• DIN-Rail Mountable
• Networked Ethernet data acquisition in open systems environment
• Direct 10-BaseT Ethernet interface
• Built-in TCP/IP protocol for communications
• Interfaces data to network resources and plantwide software
• Synchronous and asynchronous client/server communications
• Up to 2.8 kHz throughput 32 programmable digital I/O channels
• Two 16-bit counter channels perform frequency measurement
• High-speed event counting up to 250 kHz
• Inputs can be programmed to read digital signal status, change-of-state and low speed event counting
• Outputs can be programmed for normal (on/off), delayed, and variable delay/pulse-width modes
• One (1) RS-232 COM port
• One (1) RS-485 COM port
• Remote communications with RS-232 devices