January-27th-2021, 05:19 AM
Hello, I am a student currently working on a project where I am trying to read and write data from node-red to PLC and vice versa. I have got a few questions regarding the hardware connection of the netPi to S7-1200 PLC.
The way I did my setting:
1. The IP address of the netPi is configured under the path of Edge Gateway default browser>Control Panel>Network>LAN.
2. Then I configured the Wi-fi connection so that netPi can communicate with its default browser through Wi-fi instead of LAN.
3. The netPi was initially connected to PC using a switch, where the LAN and 'fieldbus in' port is connected to the switch.
4. To configure the PLC program, I dowloaded the netPi GSD file and added it into the TIA portal.
Issues:
1. When I plugged in both the 'fieldbus in' and 'fieldbus out' port to the same switch, the TIA portal cannot detect the netPi device at all, however when I removed one of the fieldbus conenction leaving either 'fieldbus in' or 'fieldbus out' connected to the switch, TIA portal is able to detect the netPi. Then I tried to download the program into the connected PLC, an error of I/O device cannot be reached occur in the TIA portal.
Questions:
1. How should I connect the netPi to PLC so that TIA portal can detect the netPi, is it through either of the fieldbus connection only (in or out)?
2. I have set the IP address of the netPi GSD file to be the same in the netPi default browser under the path of Edge Gateway default browser>Control Panel>Network>LAN, but the the same error of 'I/O device' cannot be found occur when I checked the online diagnostic of the netPI in TIA portal, could anyone please guide me through how the setup should be done properly?
Thank you.
Kind regards,
Cman587
The way I did my setting:
1. The IP address of the netPi is configured under the path of Edge Gateway default browser>Control Panel>Network>LAN.
2. Then I configured the Wi-fi connection so that netPi can communicate with its default browser through Wi-fi instead of LAN.
3. The netPi was initially connected to PC using a switch, where the LAN and 'fieldbus in' port is connected to the switch.
4. To configure the PLC program, I dowloaded the netPi GSD file and added it into the TIA portal.
Issues:
1. When I plugged in both the 'fieldbus in' and 'fieldbus out' port to the same switch, the TIA portal cannot detect the netPi device at all, however when I removed one of the fieldbus conenction leaving either 'fieldbus in' or 'fieldbus out' connected to the switch, TIA portal is able to detect the netPi. Then I tried to download the program into the connected PLC, an error of I/O device cannot be reached occur in the TIA portal.
Questions:
1. How should I connect the netPi to PLC so that TIA portal can detect the netPi, is it through either of the fieldbus connection only (in or out)?
2. I have set the IP address of the netPi GSD file to be the same in the netPi default browser under the path of Edge Gateway default browser>Control Panel>Network>LAN, but the the same error of 'I/O device' cannot be found occur when I checked the online diagnostic of the netPI in TIA portal, could anyone please guide me through how the setup should be done properly?
Thank you.
Kind regards,
Cman587
