I/O Modules monitor periodic/pulse waveform signals.
Press Release Summary:
BusWorks(TM) 942MB I/O Modules capture periodic or pulse waveform signals from 2 sensor inputs for communication over Modbus network. Two discrete outputs with built-in solid-state relays can operate as independent local limit alarms or perform on/off switching functions under instructions from central controller. High-speed RS-485 transceivers support data transfer rates up to 115 Kbaud. Internal non-volatile memory stores configuration settings.
Original Press Release:
New Modbus Frequency Input Modules Monitor Two Periodic/Pulse Waveform Signals and offer Limit Alarms
Acromag adds a dual-channel frequency input module to their BusWorks line which provides a high-speed Modbus-RTU interface to distributed I/O devices and offers local limit alarm capability
Wixom, MI: Acromag's new BusWorks(TM) 942MB I/O Modules capture periodic or pulse waveform signals from two sensor inputs for communication over a Modbus network. Typical applications include monitoring magnetic pickups, proximity sensors, TTL devices, and a variety of switches (transistors, dry-contact, open drain, open collector, etc.) Inputs can also function as event counters. Two discrete outputs with built-in solid-state relays can operate as independent local limit alarms or perform on/off switching functions under instructions from the central controller. Setup is fast and easy with Windows® configuration software for selection of input/output ranges, limit alarms, and other operating parameters. These modules are ideal for SCADA and other remote I/O applications where budgets are tight and mounting space is limited. List price is $350.
To ensure unsurpassed performance, 942MB I/O modules employ the latest digital technology. Two powerful microcontrollers, one for each channel, perform advanced signal processing functions and runs self-diagnostic routines for better reliability. For fast communication, high-speed RS-485 transceivers support data transfer rates up to 115K baud. A variety of adjustable filters (hysteresis, averaging, debounce, relay time delay, alarm deadband) suppress noise and prevent false counts.
Many other features add convenience and enhance safety. Internal non-volatile memory stores configuration settings for easy printing, archival to disk, or duplication on other modules. Optical isolation separates input, output, power, and network circuits to increase noise/transient immunity and prevent ground loops. Status LED's provide diagnostic feedback and visually indicate which channels are outside their calibrated range.
Sophisticated watchdog timer functions allow the application to define the module's failsafe output state. The watchdog timer invokes the failsafe condition when communication between the
host and module exceed a duration specified by the application. For further security, a second hardware watchdog timer monitors the microcontroller for failed operations or a "lock-up" condition and automatically resets the unit.
Series 900 I/O modules are compatible with popular Human-Machine Interface (HMI) software packages that support Modbus communication. The I/O modules may be configured using generic
drivers provided with the HMI software to access the Modbus register maps.
A full compliment of accessories to complete the system include both isolated and non-isolated RS-232-to RS-485 signal converters for PC-to-network communication. Network repeaters extend the communication distance another 4000 feet and allow connection of an additional 32 network devices. Power supplies, mounting hardware, and surge suppressors are also available.
Acromag, a multimillion dollar international corporation, has been manufacturing and developing measurement and control products for more than 45 years. They offer a complete line of industrial I/O products including process instruments, signal conditioning equipment, data acquisition boards, distributed I/O systems, and communication devices.
For more information about Acromag products, call the Inside Sales Department or Marketing Communications at (248) 624-1541, (800) 881-0268, FAX (248) 624-9234, or write Acromag, Inc.
at P.O. Box 437, Wixom, MI 48393-7037 USA. Information is also available on the Acromag web site at www.acromag.com.
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