Read PLC-variables on a S7-1500 with Raspberry Pi

Industrial
1

Hey Guys,

i want to read a variable from my Siemens ET200SP with Node-RED on Raspberry Pi via Ethernet. I tried the "S7 in"-Node, but there are 2 Errors.
"Error:connect ECONNREFUSED 192.168.0.1:102"
and
"Error:connect ECONNREFUSED 127.0.0.1:102".
Under the note there is the red "offline"-mark.
I hope there is any help for me...

2

Can you ping the plc? In plc enable get/put and in node setup rack = 1.

4

If i ping it, the Raspberry Pi`s Output is:"PING 192.168.0.1(192.168.0.1) 56(84) Bytes of data".

5

Where is this "get/put" in PLC? I can`t find it

6

Sorry don’t have tia open in front of me. You will have do a bit of digging through the controller properties. It’s there...

7

Hi,
S7-1200 and S7-1500 CPU access requires access using "Slot 1" and you must disable optimized block access (in TIA portal) for the blocks you are using. In addition, you must "Enable GET/PUT Access" in the 1200/1500 controller in TIA Portal. Doing so opens up the controller for other access by other applications as well, so be aware of the security implications of doing this.

plc
plc1056×681 138 KB

8

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