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- FAQ > Controllers > Programmable Controllers MELSEC > MELSEC-Q Series > Difference between SM0 and SM1
FAQ
- Inquiries
Difference between SM0 and SM1
What are the differences between the special relays SM0 and SM1 of the basic model QCPU?
- Category :
Answer
SM0 turns ON when self-diagnostic checks detect an error or when an annunciator turns ON.
SM1 turns ON when self-diagnostic checks detect an error.
SM1 turns ON when self-diagnostic checks detect an error.
- Product Name
- MELSEC-Q Series
- Series
- CPU
