コード 20002: [Channel %1: ] Axis %2 zero mark not found
問題の説明と安全警告
Siemens SINUMERIK 840D CNC は重大な [Channel %1: ] Axis %2 zero mark not found アラームをトリガーしました。製造サイクル中に機器への二次的損傷や部品の破損を防ぐために、資格のあるオペレーターまたはメンテナンス技術者による直ちの対応が必要です。電気キャビネットにアクセスする前に、必ず標準の安全およびLOTO手順が遵守されていることを確認してください。
公式トラブルシューティング手順
Parameters: %1 = Channel number %2 = Axis name, spindle number Definitions: The hardware zero mark of the incremental position encoder or the substitute zero mark of the absolute position encoder is not within a defined section. Phase 2 of the reference point approach ends when th e zero mark of the encoder has been detected after the rising/falling edge of the NC/PLC interfac e signal DB31,... DBX12.7 (Deceleration reference point approach) has given the trigger start. The maximum distance between the trigger start and the zero mark that follows is defined in the MD34060 $MA_REFP_MAX_MARKER_DIST. The monitor prevents a zero mark signal from being overtraveled and the nex t being evaluated as reference point signal. (Faulty cam adjustment or excessive delay by the PLC user program). Reaction: NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm. Remedy: Please inform the authorized personnel/service department. Check the cam adjustment and make sure that the distance is sufficient between the end of the cam and the zero marker signal that follows. The path must be greater than the axis can cover in the PLC cycle time. Increase the MD34060 $MA_REFP_MAX_MARKER_DIST, but do not select a value greater than the distance between the 2 zero markers. This might result in the monitor being switched off. Program Continuation: Clear alarm with the RESET key. Restart part program
Source: SINUMERIK 840D sl / 840Di sl / SINAMICS S120 Diagnostics Manual (DAsl, 03/2009)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
Siemens SINUMERIK 840D CNC のアラームについて
Siemens によって構築された産業用コントローラーは、内部回路と機械的リンケージを保護するための広範な診断システムで設計されています。SINUMERIK 840D CNC が 20002 のようなエラーコードをスローする場合、通常、指令値と実際のセンサーフィードバック間の不一致を示します。
完全アラーム一覧: 4014 Siemens SINUMERIK 840D CNC コードs.
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