The Acromag range of Profibus I/O modules are high performance units that feature universal input/output ranges and an intelligent microcontroller to provide flexibility and powerful monitoring and control capabilities.
Each module provides a direct network interface for I/O signals. Unlike 'block I/O' devices that combine a large and expensive processor block with snap-on I/O terminal blocks, the Acromag 900PB modules handle the network interface and I/O processing in a single, compact multichannel module. This space-saving approach (25,4 mm wide for six channels) is cost-effective for systems that need to add some I/O channels at an existing control site or new network, remote sites. Isolated input, output, power, and network circuits increase noise/transient immunity and prevent ground loops. Status LEDs provide diagnostic feedback.
Self-diagnostics and sophisticated watchdog timers simplify maintenance and troubleshooting. The watchdog timer invokes a failsafe condition if host communication is lost. For further security, a second watchdog monitors the microcontroller for failed operations or a 'lock-up' condition and automatically resets the unit.
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