A common requirement in machine tool automation is creating "exclusive" logic using these keep relays. This article covers how to configure, modify, and utilize FANUC keep relay parameters when you need mutually exclusive operations. What are FANUC Keep Relays?
The phrase is a constant reminder that a CNC machine is not a generic computer. It is a tightly integrated system where each bit in memory serves a specific, often safety-critical, purpose.
K0012.2 = 1: Continuous Tilting Rotary Table installed (Dual-axis clamping circuits monitored). 3. Coolant and Auxiliary Systems K0020.3 = 1: Standard flood coolant system only.
Modifying keep relays can fundamentally change how a machine tool operates. Keep these rules in mind: fanuc keep relay parameters exclusive
Modifying turret rotation restrictions to allow faster tool changes, for example, changing a K17cap K 17
When we talk about , we are referring to the specific, often system-critical K-bits ( K0.0cap K 0.0 K999.7cap K 999.7
FANUC Keep Relays are displayed in a byte format consisting of 8 individual bits, numbered from right to left (Bit 0 to Bit 7). A common requirement in machine tool automation is
In poorly written legacy PMC ladders, missing interlocks combined with conflicting keep relays could cause physical components to actuate at dangerous times—such as a tool arm extending while the spindle is still spinning. Industrial Best Practices for Technicians
(the "Integrated Mode" bit defined in the manufacturer's manual), he bridged the two functions.
With these details, we can narrow down the exact keep relay interlocks involved! YouTube·DN Solutions_Official Get to know how to change the Keep Relay! The phrase is a constant reminder that a
If you don't have the manual, press [SYSTEM] -> [PMC] -> [SIGNAL] . Search for your K-address to see how the bits interact dynamically in the live ladder diagram. Look for parallel branches that might block output coils if both inputs are active.
Machine Tool Builders (MTBs) use Keep Relays to configure the physical attributes and operational logic of the machine. Common applications include:
— Some exclusive K relays directly control emergency stop behavior or hardware interlocks. Changing them outside FANUC specifications can create hazardous conditions.