IOT2040, S7 PLC and cloud platforms

Dear friends,

I am just settings up my IOT2040 module.

Looking upon node red node-red-contrib-s7 library I was surprised to see that it allows only reading actions from S7 PLCs.

Is there a way to control outputs on Siemens S7 PLC using node red or any other workaround using IOT2040? Could you provide some hints?

Have any of you guys connected IOT2000 series to cloud platforms like thingspeak ?

Best regards,

Mircea.

Hello all,

I just seen that there is a modbus TCP library for node-red (node-red-contrib-modbustcp)...I thing this might work since S7-1xxx series have Modbus TCP already implemented.

Best regards,

Mircea

Hi bergmanu,

thanks for your response.

I'll check the application you referred at.

This weak I will make some tests focused upon reading and writing modbus registers inside an S7-1200 PLC from node-red modbus tcp node and let you know about results.

If it worked with Watson IoT and Azure, shall work with others to.

Best regards,

Mircea

It would be great if you could provide an example application to connect to any cloud platform. I am looking at connecting to a cloud platform (AWS).

Hello all,

Finally I finished a small project for a green house using a S7-1200 PLC + IoT2040 Gateway, which has a local interfaces based on node-red framework. 

IoT2040 uses modbus TCP to connect to S7-1200 PLC.

IoT2040 connects to IoT platform Thingspeak using Node-red by sending some data to cloud using HTTP commands. (https://thingspeak.com/channels/231523).

Everything works fine and seems great offering lots of possibilities.

adm_iot

It would be great if you could provide an example application to connect to any cloud platform. I am looking at connecting to a cloud platform (AWS).

bergmanu

Hi Mircea3M,

yes, unfortunately the S7 node only supports reading data. 

With node-red there is no possibility to my knowledge. There is an application by user davenardella, just have a look at it, maybe it helps you :) 

https://support.industry.siemens.com/tf/de/en/posts/snap7-iot-for-quark-iot2000-platform/158392/?page=0&pageSize=10

I never connected the IOT2000 to thingspeak, but i did it with Watson IoT Platform and Azure. There are some nodes for node-red available. We will provide some application example soon. 

Best regards!

 S7 node support now writing data, i have tested it with Logo 8 and it works fine !!

Hey Mircea3M,

sounds really great. Could you share some pictures and impression of your greenhouse project?

I would love to see other IOT2040 projects in "action".

New question published by c.rossati is split to a separate thread with the subject bacnet/ip supported by Arduino in IOT 2040 to comunicate from others PLC Siemens in field?.

Best regards
Min_Moderator

Hi Mircea3M,

Did you run any experiments with this setup? Experiments such as testing the throughput of the IOT2040 device.

I am interested to know how many tags per second can be handled by the IOT device.

Thanks