Can I …?

Can I

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• No, unfortunately the CM4S it is incompatible.

Can I use the 3 unlabeled LEDs on the DIO module?

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use a temperature sensor with Node-RED?

Yes, for example with a 1Wire USB bus coupler and the DS9490R from ESRA, which is listed here as tested:

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Can I use PTP Time Stamps?

Yes, take a look here:

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Would it be possible to connect a 3-wire PT100 to the analog inputs of a RevPi Compact?

• The RevPi Compact does only support 2 wire PT100 RTD, which must be connected to an input, and it's 0V pendant.

• If the sensor is only available as a 3 or 4 wire variant, you could use an external temperature transducer (converts the RTD to 0-10 V / 4-20mA)

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Can I

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put a CM4S in a Revolution Pi Compact Module?

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• No,

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• unfortunately the CM4S it is incompatible.

Can I use the 3 unlabeled LEDs on the DIO module?

No, they are not assembled on the circuit board.

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Can I use PTP Time Stamps?

Yes, take a look at the following link here:

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Can I

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Our connector in the color gray is a special production. The same connector in black or green is available from Phoenix Contact.

Can I operate a thermocouple on a Revolution Pi module, i.e., an AIO module?

• No, unfortunately not.

Can I expand the RevPi's internal memory with an SSD or NVMe?

We do not currently offer memory expansion on any of our units except via USB.

→ Related to Core 1/3/3+/SE/S, Connect 3/3+/SE/S, Flat, Compact

Can I destroy modules in a hardware setup because of a short circuit?

In a hardware setup with several IO modules and a Revolution Pi Connect SE module, a short circuit occurred at power up. I should mention that at the time of the damage to the IO modules, a USB cable was attached to put the controller into bootloader mode to read the disk image, so I was thinking maybe the cable was defective. However, I tested the cable OK on other devices and it seems to be fine. How can this be?

• The Revolution Pi Connect SE module works and is not affected by the polarity reversal because it has a galvanically isolated power supply.

• If individual IO modules are connected with reversed polarity, this can lead to destruction.

• Take a look at Video Tutorial #12 – Controlling the Digital IO Modules with the PiBridge. There it is explained why a short circuit can occur due to the polarity reversal of individual modules. https://revolutionpi.com/tutorials/video-tutorials/#VT12

• It certainly couldn't be the USB cable. A USB2 port does not bring the current that would be needed, USB2 sources shut down at more than 500mA, except chargers and power packs. So, no, a IO module was incorrectly polarized.

Can I experiment with the RevPi stretch image on a standard Raspberry Pi 3b+?

No, because the image was adapted to the RevPi hardware.
In the GitHub repository are all the sources to make adjustments and, if necessary, adapt the image according to your needs.

use absolute encoders?

Currently, the Revolution Pi's "Encoder" option primarily supports incremental encoders.

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How can I implement an Emergency stop on the RevPi

take a look at the following link : https://revolutionpi.com/forum/viewtopic.php?t=3851

Can I get the 14-pin connector of the DIO module?

Our connector in the color gray is a special production. The same connector in black or green is available from Phoenix Contact.

Can I operate a thermocouple on a Revolution Pi module, i.e., an AIO module?

• No, unfortunately not.

Can I expand the RevPi's internal memory with an SSD or NVMe?

We do not currently offer memory expansion on any of our units except via USB.

→ Related to Core 1/3/3+/SE/S, Connect 3/3+/SE/S, Flat, Compact

Can I destroy modules in a hardware setup because of a short circuit?

In a hardware setup with several IO modules and a Revolution Pi Connect SE module, a short circuit occurred at power up. I should mention that at the time of the damage to the IO modules, a USB cable was attached to put the controller into bootloader mode to read the disk image, so I was thinking maybe the cable was defective. However, I tested the cable OK on other devices and it seems to be fine. How can this be?

• The Revolution Pi Connect SE module works and is not affected by the polarity reversal because it has a galvanically isolated power supply.

• If individual IO modules are connected with reversed polarity, this can lead to destruction.

• Take a look at Video Tutorial #12 – Controlling the Digital IO Modules with the PiBridge. There it is explained why a short circuit can occur due to the polarity reversal of individual modules. https://revolutionpi.com/tutorials/video-tutorials/#VT12

• It certainly couldn't be the USB cable. A USB2 port does not bring the current that would be needed, USB2 sources shut down at more than 500mA, except chargers and power packs. So, no, a IO module was incorrectly polarized.

Can I experiment with the RevPi stretch image on a standard Raspberry Pi 3b+?

No, because the image was adapted to the RevPi hardware.
In the GitHub repository are all the sources to make adjustments and, if necessary, adapt the image according to your needs.

https://revolutionpi.de/forum/viewtopic.php?f=6&t=2715#p9876

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• https://revolution.kunbus.de/forum/viewtopic.php?f=18&t=2844#p10344

• https://kunbus-gmbh.atlassian.net/servicedesk/customer/kb/view/651132931

Others Questions…?

What is the use-case for the SYNC pin on the RevPi Connect 4?

The SYNC pin was actually intended for TSN but this is no longer an issue.

(659) pibridge sync pin use-case? - The Industrial Raspberry Pi Forum (revolutionpi.com)

What is the meaning of the RS485ErrorCnt variables?

This is where transmission errors are counted on the PiBridge backplane bus. If the transmission errors exceed a value, the PiBridge is switched off. This brings the IO modules into a safe state.

(666) RS485ErrorCnt in RevPi Core S - The Industrial Raspberry Pi Forum (revolutionpi.com)

One of the black plastic clips that secures the PLC to the DIN Rail broke. Is it possible get a replacement?

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