Our great sponsors
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snap7-to-prometheus
Getting data out of Siemens PLCs using the Snap7 library and presenting them as metrics that can be read by Prometheus
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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
If I were you, without knowing all the details, I'd buy the cheapest s7-1200, read the Profinet IO-Link master with that. You can then get the values out of the PLC with this program that reads your PLC. It uses Snap7 and then publishes the values as a webpage (syntax made for prometheus). You can then use prometheus and grafana to do the graphing.
NOTE:
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Hence, a higher number means a more popular project.