8/31/2020 4:46 PM | |
Joined: 8/31/2005 Last visit: 8/20/2024 Posts: 2198 Rating: (328) |
See https://support.industry.siemens.com/cs/ww/en/view/109772940 |
Last edited by: miami at: 08/31/2020 16:46:38Last edited by: miami at: 08/31/2020 16:47:16 |
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9/1/2020 4:47 PM | |
Joined: 8/18/2020 Last visit: 3/7/2022 Posts: 21 Rating: (0) |
There is _some_ device driving digital outputs (x8) connected to DI 0.0-0.7 of this S7-1200 PLC. Yes, it's a digital i/o device. Example of I/O device, it's similar to the I/O device I'm using. The digital outputs are _sinking_ outputs? Meaning, they provide a path to common when enabled. Yes, the digital outputs are sinking outputs. The circuit is in the first post. If the digital outputs are not wired to anything, what is present at the digital output pins? Nothing? Yes, it's a terminal block outputs, so the digital output pins will be 0 if there's no source connect to it since it's a sinking output. The 1M in this case should be using the 24V reference of the remote device's digital outputs, not the PLC's digital input 24V source (good for a very small amount of current). Sorry, I don't really get what you mean by connecting the 1M to 24V reference. I'm using the 24VDC Out from the PLC to power my I/O device (like the VIN in the example). So I'm actually already connecting the 24V of the digital outputs to 1M. Is this what you meant? |
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