Thanks for your quick reply. This was the problem. Duet is working now.

I did.
Network is enabled, configured IP address: 192.168.1.14, actual IP address: 192.168.1.14

Static I use now 192.168.1.14
Direct the warning :Another device on the network is using your computer’s IP address (192.168.1.14).
What will be next step. Why so difficult.Getting Connected to your Duet is unclear.

Duet Ethernet is connected directly to the mac.
DHCP gives: IP address 169.254.12.65 and 255.255.0.0
The warning I get is: Ethernet has a self-assigned IP address and will not be able to connect to the Internet.

DHCP Manual IP 0.0.0.0 gives the message :The value entered is reserved for the default route and cannot be used as the IP address for this computer.

Use the RepRapFirmware configurator.
; Network
M550 PHenk ; Set machine name
M552 S1 ; Enable network
;*** Access point is configured manually via M587
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

Follow the steps on the “Getting Connected to your Duet” Terminal on the mac.
/dev/tty.*
/dev/tty.Bluetooth-Incoming-Port /dev/tty.usbmodem1421
screen /dev/tty.usbmodem1421 115200

I get blank screen.
M552
Network is enabled, configured IP address: 0.0.0.0, actual IP address: 0.0.0.0
ok
M552 S1
OK

No IP address is showing.
IP address: 0.0.0.0 is not working on the mac.
Using DHCP with Manual address 0.0.0.0 gives warning Invalid IP Address.
Automatic DHCP result: Ethernet has a self-assigned IP address and will not be able to connect to the Internet.

Using the factory setup was 2 times working.

What to do?

Thanks,I will wait. Your DuetWifi and special the Smarteffector are working great. Z probing is fast and exact.

Working fine smartphone as WIFI hotspot. And is it possible without smartphone. I try to set up a WIFI hotspot on my macbook pro without succes.

Is there a way to connect Duet WiFi via WIFI direct to my PC without using a network.

You are correct. I close Simplify3d and YAT is running. I get now:" Wifi module is connected to IP address 192.168.20.106
This IP address is filled in Chrome and the Duet control is visible. From here I can set up the delta. Correct?

Usb is connected with Simplify3d. Device manager show Duet Wifi under Ports(Com&LPT).
Yat "Terminal settings" show Duet Wifi in Com 3. So far no problem.

I can not send text from Yat. Terminal Error. Unable to start terminal. Access to the port"com3"is denied.
How can I setup the Duetwifi for Delta.

To attache an image is not possible with this system .What to do with ????
I reboot the computer ,reinstall, Yat 64 en 32. I feel sick to do this all only to put a password in for wifi.
Only the message is "no serial COM Ports.On the device manager stay-Duet under "other devices".
On the smart effector page stay no wire diagram. Only text and unclear photos.
Please send me an email address where I can send you the screenshot.