Upgrade with MKS UPS

Board connect

• This method is suitable connect for MKS UPS12V and UPS24V
• Wiring diagram

Firmware setting

• Enable #define POWER_LOSS_RECOVERY in configuration_adv.h
  • #if ENABLED(POWER_LOSS_RECOVERY)

    • #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 PB1 // Pin to detect power loss. Set to -1 to disable.

    • #define POWER_LOSS_STATE HIGH // State of pin indicating power loss

    • #define POWER_LOSS_PULL // Set pullup / pulldown as appropriate

    • #define POWER_LOSS_PURGE_LEN 20 // (mm) Length of filament to purge on resume

    • #define POWER_LOSS_RETRACT_LEN 10 // (mm) Length of filament to retract on fail. Requires backup power.

    • // Without a POWER_LOSS_PIN the following option helps reduce wear on the SD card,

    • // especially with "vase mode" printing. Set too high and vases cannot be continued.

    • #define POWER_LOSS_MIN_Z_CHANGE 0.05 // (mm) Minimum Z change before saving power-loss data

  • #endif