The PN device cannot be scanned by PLCnext Engineer

kkzhang

The Siemens D410-2 DP/PN Controller cannot be scanned by PLCnext Engineer(2021.6.1 Build 4.10.294.0 or 2021.0.2 Build 4.7.1183.0). However the PN device can be found both in Netnames+ or PC WORX(6.30.2519). The controller is used to control the Weiss rotary table(TC0220T). Is there any solutions to solve this problem?

Frank Phoenix Contact Deutschland Support

Hi kkzahng,

this might be caused from a known issue with npcap, please find below a statement from the PLCnext Engineer change notes (available in the download center).

If the online-device editor is not able to find any controller or PROFINET device, it might be caused by a corrupt npcap installation. In this case, proceed as follows:
– Check the status by entering the following command in the command line shell: „sc query npcap“
– If anything other than “4 RUNNING“ is displayed in
the line “STATE“, the configuration has to be
changed.
– To do this, enter the command
“sc config npcap start=auto“ followed by the command “sc start npcap“.
If there are still no online devices found, Npcap has to
be reinstalled. To do this, proceed as follows:
– Uninstall PLCnext Engineer.
– Uninstall the Npcap software.
– Install PLCnext Engineer again.

Have agreat weekend,
Frank

kkzhang

Hi Mr. Frank,
Thanks for your response.
As you see in the first attachment, The PLCnext engineer could scan PN devices except this Siemens controller. The npcap function looks like working normally.
However, I also took the steps that reinstalled the npcap. The device still not on the list of PLCnext engineer--profinet-- "Online devices".
Have a nice day! Looking forward to your reply.

Frank Phoenix Contact Deutschland Support

The issue were caused on a bad return of the PN device.
With the PN DCP answer of the device is also a role definition included.
The PN scan in PLCnext Engineer filters at this stage for the role "IO-Device".
In this case does the PN Device answer only with the role "IO-Controller", so the "IO-Device" role were missing and the device is therefore not shown in PLCnext Engineer.