S Y S T E M C O N T RO L M O D U L E

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Enhanced PWM function. .

E n h a n c e d P W M f u n c t i o n

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Timer counters 6–9 have additional features to add enhanced PWM functionality: High register — Compared to the timer/counter to toggle PWM output high Low register — Compared to the timer/counter to toggle PWM output back low

Three 15-bit Step registers associated with four enhanced timer/counters. The values of Step registers are added when the high, low, and reload values are reached, which allows a steadily variable motor control PWM wave to be generated. The enhanced PWM function is output through GPIO through the functions labeled Ext Timer Event Out Ch N for channels 6 to 9.

Sample enhanced

PWM waveform

Reload Value

High Value

High Value

Terminal Count

FFFF_0000

FFFF_7000

FFFF_B000

FFFF_FFFF

Timer Counter clock frequency

75MHz

 

 

PWMperiod

 

873.000 usec

 

 

Low time 1

 

382.293 usec

 

 

High time

 

218.453 usec

 

 

Low time 2

 

272.254 usec

 

 

Q u a d r a t u r e d e c o d e r f u n c t i o n

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The processor provides a quadrature decoder function to allow the CPU to determine the external device rate of rotation and the direction of rotation. Example applications are robotic axles for feedback control, mechanical knobs to determine user input, and in computer mice, to determine direction of movement.

One timer/counter will include a quadrature decoder function, which takes some computational load off the CPU. When a CPU reads the output signals of a quadrature encoder, every state must be decoded and a counter needs to be updated based on the interpretation of the states. For example, for an encoder of 256 pulses per revolution turning at a modest 6000 rpm, the CPU needs to find and decoded 102,400 state changes per second and update the counter accordingly. With an x8 sampling rate, the CPU needs to sample the input about 8 x 102,400 timer per second. This consumes a significant portion of the CPU bandwidth.

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Digi NS9215 H a n c e d P W M f u n c t i o n, A d r a t u r e d e code r f u n c t i o n, Sample enhanced PWM waveform

NS9215 specifications

The Digi NS9215 is a powerful solution designed for industrial applications that require reliable connectivity and robust performance. Built on a foundation of advanced technologies, the NS9215 serves as a versatile networking device that meets the demands of automation, remote monitoring, and data acquisition.

One of the standout features of the Digi NS9215 is its multi-protocol support. It is capable of handling various communication protocols, including Ethernet, Serial, and Wireless, making it ideal for integration into heterogeneous environments. This flexibility enables users to connect legacy devices to modern networks seamlessly, facilitating smoother data communication across different platforms.

The NS9215 is equipped with powerful processing capabilities, featuring an integrated processor that ensures efficient data handling. This enables the device to perform complex data tasks without compromising performance. Its high-speed connectivity options also allow for rapid data transmission, which is crucial for real-time applications in industrial settings.

Another critical characteristic of the Digi NS9215 is its reliability in harsh environments. Built to withstand extreme temperatures, humidity, and electrical interference, this device assures consistent operation even in challenging conditions. Its rugged design minimizes the risk of failure, making it suitable for deployment in various industrial environments.

Security is a top priority for the Digi NS9215. It comes with advanced security features that protect sensitive data during transmission and prevent unauthorized access. Employing encryption protocols and secure authentication methods, the NS9215 ensures that data integrity and confidentiality are maintained throughout its operation.

The user-friendly interface of the NS9215 allows for easy configuration and management. This ease of use reduces the time required for installation and setup, enabling quick deployment in field operations. Additionally, remote management capabilities enhance operational efficiency, allowing users to monitor device performance and make adjustments from anywhere.

Furthermore, the NS9215 supports extensive scalability options. As organizations grow and evolve, the ability to scale up or adapt the networking capabilities becomes essential. With its modular design, the NS9215 can easily accommodate additional devices and protocols, ensuring longevity and continued relevance in a rapidly changing technological landscape.

In conclusion, the Digi NS9215 is a robust networking device designed for a wide range of industrial applications. Its multi-protocol support, reliability, security features, user-friendly interface, and scalability make it a valuable addition to any industrial network infrastructure, delivering performance and efficiency that businesses can depend on for critical operations.