Cant scan for plc axc f 2152

PLCnext Engineer
1

Cant scan for plc axc f 2152 Hi, I cant find the plc when i scan for it, i have disabled firewall and have the software up to date. And i can ping the ip and it works. My co worker can scan and find it but not me Any ideas?

2

Hello,

1. make sure the network adapter is the correct one.
2.make sure that discorvery protocollls are activated. (network adapter settings / NPCAP/ LLDP/link layer discovery )
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3. make sure you dont have a FW rule that blocks DCP messages.
4. Make sure winpcacp is installed.

If this does not help try starting plcnext engineer with administrator permissions or installing PLcnext Engineer in Winpcap again.

3

Hi rbslmt, we’ve heard that this sometimes happen, mostly it helps to start PLCnext Engineer as Admin on your PC. If also this does not solve the problem you can also use Netnames+ to scan the PLC. Netnames+ uses the same protocol (PN-DCP) and is designed to search for general Profinet devices.

The handling is fairly easy and self explained, the only important point for the usage with PLC is that you have to choose “set ip static”.
Otherwise were all settings gone after a power reset (default Profinet mode). Hope that helps, Frank

4

Hi Thanks for your help but i have tried every step and still nothing. I can find it when i use Netnames+ but still not in the engineer software to connect to it. And i have the newest winpcacp and NPCAP installed. Edit: I think i know the problem, me and my coworker have different versions of npcap, and he has 2 different npcap packet drivers and i think i didnt click in the option to insall npcap when installing engineer software. So im trying to uninstall npcap but the option in enginner software to install npcap is grayed out bc it said it already have it installed, but i deleted it i think at least

5

Hi rbslmt, I’ve talked with the PLCnext Engineer experts and searched also in our ticket DB. The general recommendation is:

                                             * uninstall PLCnext Engineer
                                             * uninstall npcap
                                             * reboot
                                             * reinstall PLCnext Engineer

I hope this does the job, otherwise it’s getting tough as then the OS settings play a role… Have agreat weekend, Frank

6

You could also just uninstall the Npcap driver and re-install it. If you have Siemens TIA portal on you computer, you will see this issues alot. Both are using the Npcap service and that messes things up from time to time. I have done all that Frank mentioned and after some time I go annoyed. So I did look a bit more closer. For uninstalling the Npcap service, open your Ethernet properties → finde the Npcap Packet Driver and uninstall it. After that, just click Install → Services → Nmap Project → Npcap Packet Driver and hit OK. Works in my case, hope it will work for you too. Peter Paul

7

you can also use powershell with administrator rights and type the following command: net start npf

David de Roo