mockdevice-plc

1. Start Shifu and connect a simple virtual PLC

There is already a demo virtual PLC deployment configuration in shifu/deviceshifu/examples/demo_device . The virtual PLC will virtualize the binary code of the four storage areas "M", "Q", "T" and "C" of the PLC device. This binary encoding can be read with the getcontent API, or modified with the sendsinglebit API.

From the shifu root directory, run the following command to install shifu :

kubectl apply -f k8s/crd/install/shifu_install.yml

In the shifu root directory, run the following command to package the virtual PLC into a Docker image:

docker build -t edgehub/mockdevice-plc:v0.0.1 . \
       -f deviceshifu/examples/mockdevice/plc/Dockerfile.mockdevice-plc

In the shifu root directory, run the following commands to load the virtual PLC image into Kind and deploy it to the Kubernetes cluster:

kind load docker-image edgehub/mockdevice-plc:v0.0.1
kubectl apply -f deviceshifu/examples/demo_device/edgedevice-plc/

2. Interact with deviceShifu

We can interact with deviceShifu through the nginx application, the command is:

kubectl run nginx --image=nginx
kubectl exec -it nginx -- bash

Interact with the virtual PLC through the following commands on the nginx command line:

curl "deviceshifu-plc/sendsinglebit?rootaddress=DB&address=0&start=0&digit=0&value=1";echo 
curl deviceshifu-plc/getcontent?rootaddress=Q;echo 

example output:

curl edgedevice-plc/getcontent?rootaddress=Q;echo 
0b0000000000000000
curl "edgedevice-plc/sendsinglebit?rootaddress=DB&address=0&start=0&digit=0&value=1";echo 
0b0000000000000001