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Description
Waveshare Industrial 4-Ch PWM Output Module Modbus RTU RS485, Adjustable Frequency & Duty Cycle, Modbus RTU PWM Output 4CH1. This product is an industrial standard isolated RS485 to PWM pulse output module. Four channels of frequency and duty cycle are independently adjustable. It adopts Modbus RTU protocol and includes built in protection circuits such as power isolation, magnetic coupling isolation, self recovery fuse, and TVS. 2. The output uses high speed optocoupler isolation, and the output high level voltage can be selected via internal jumpers. 3. Four channels
1. This product is an industrial standard isolated RS485 to PWM pulse output module. Four channels of frequency and duty cycle are independently adjustable. It adopts Modbus RTU protocol and includes built-in protection circuits such as power isolation, magnetic coupling isolation, self-recovery fuse, and TVS.
2. The output uses high-speed optocoupler isolation, and the output high-level voltage can be selected via internal jumpers.
3. Four channels of PWM pulse output with frequency and duty cycle independently adjustable.
4. Supports setting device address (1 to 255) to cascade multiple devices via the RS485 bus.
5. On-board voltage regulator chip supports wide voltage supply from 7V to 36V.
6. On-board integrated power isolation provides stable isolation voltage; the isolated end requires no additional power supply.
7. On-board integrated magnetic coupling isolation enables signal isolation, with high reliability and strong anti-interference capability.
8. On-board self-recovery fuse and TVS (Transient Voltage Suppressor) effectively suppress surge voltage and transient spike voltage in the circuit, protecting against overcurrent, overvoltage, lightning, and static electricity.
9. Built-in watchdog ensures stable output without crashing.
10. Rail-mounted enclosure design, compact size, easy installation.
11. External 3 LED indicators for convenient viewing of power status and signal transmission/reception status.
Parameters:
1. Communication Interface: RS485
2. Communication Baud Rate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
3. Default Communication Format: 9600, N, 8, 1
4. Modbus Protocol: Standard Modbus RTU Protocol
5. Supply Voltage: DC 7V to 36V
6. Output Voltage: Default 3.3V, can be set to 5V via internal jumper
7. Output Current: Signal type, less than 30mA
8. Pulse Frequency: 1Hz to 200KHz
9. Frequency Resolution: 0.01Hz
10. Frequency Accuracy: 0.5 percent (equivalent to 5 per mille)
11. Duty Cycle: 0 to 100 percent
12. Duty Cycle Resolution: 0.01 percent
13. Duty Cycle Accuracy: 0.5 percent (1Hz to 50KHz), 1 percent (50KHz to 200KHz)
Specification:
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4.5 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Superb
Format: Hardcover
A superb selection of Williams' poetry in a handsome and durable small volume. The editor, Robert Pinsky, selected an appropriate spectrum of Williams' verse across his long career, including all his most famous poems. Reading and rereading these poems is always rewarding because of Williams' ability to capture arresting images, experiences, and states of mind. As with all anthologies, some choices may be arguable. I would like to see all of his great, late poem Asphodel included but Pinsky's choices make sense and reflect his sure knowledge of Williams' work. This book is a great addition to the worthy American Poets Project.
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Reviewed in the United States on February 5, 2014
★★★★★ 5
Another excellent volume from the American Poets Project
Format: Hardcover
As stated in another one of my reviews, every single Library of America volume I've ever purchased (including volumes from the American Poets Project) have been of the highest quality, superbly executed and just plain beautiful.
Already possessing several volumes of William Carlos Williams work, I purchased this compact, delightful volume as a gift for my oldest son (who shares my appreciation for both great literature generally, and poetry specifically). Upon its arrival (delayed, once again, by amazon's ridiculously slow delivery) I was more than pleased, and felt proud to be presenting my son with such a first rate representation of W.C.W.'s work.
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Reviewed in the United States on January 11, 2009
★★★★★ 4
they are still as good as they were when they were first written
Format: Kindle
I've been reading William Carlos Williams since the seventies. His poetry was ground breaking at the time of there release, and to me, they are still as good as they were when they were first written. His portrayals of every day people and pastoral scenes are still worth reading. His rhythms in his short poems are worth studying for any poet. I recommend reading his selected Poems.
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Reviewed in the United States on December 15, 2014
★★★★★ 5
Enjoyable
Format: Kindle
William Carlos Williams is a wonderful poet who incorporates the mundane and interesting things happening around him in his poetry. One word will suffice: enjoyable.
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Reviewed in the United States on November 3, 2020
★★★★★ 3
So much depends...on hype
Format: Paperback
There's more to doc WCW than
Little Red Wheelbarrow...
But not much
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Reviewed in the United States on January 1, 2021