MKS PWC preset

Marlin/Configuration_adv.h

@@ -1322,7 +1322,9 @@
     #define PLR_ENABLED_DEFAULT   false // Power Loss Recovery enabled by default. (Set with 'M413 Sn' & M500)
     //#define BACKUP_POWER_SUPPLY       // Backup power / UPS to move the steppers on power loss
     //#define POWER_LOSS_ZRAISE       2 // (mm) Z axis raise on resume (on power loss with UPS)
-    //#define POWER_LOSS_PIN         PLR_PIN // Pin to detect power loss. Set to -1 to disable default pin on boards without module.
+    #ifdef PLR_PIN
+    #define POWER_LOSS_PIN         PLR_PIN // Pin to detect power loss. Set to -1 to disable default pin on boards without module.
+    #endif
     //#define POWER_LOSS_STATE     HIGH // State of pin indicating power loss
     //#define POWER_LOSS_PULLUP         // Set pullup / pulldown as appropriate for your sensor
     //#define POWER_LOSS_PULLDOWN