Typically reserved for builder-defined machine sequence logic.
For troubleshooting, keep relays can be used to bypass physical sensor alarms or simulate signals (like a "work gap sensor") during machine setup. Address Structure and Bit Significance
Keep relays are organized by address (e.g., K0, K1, K2) and then by individual bits (0 through 7).
Key in the desired K-address (e.g., K17) and press .
The primary "exclusive" role of keep relays is to act as software-driven switches that bridge the gap between fixed CNC parameters and the machine tool builder's (MTB) custom ladder logic.