代碼 120403: Bus%1.Slave%2: %3: Check/acknowledge topology!
問題描述與安全警告
Siemens SINUMERIK 840D CNC 觸發了嚴重的 Bus%1.Slave%2: %3: Check/acknowledge topology! 警報。需要由合格的操作員或維修技師立即處理，以防止在製造週期中對設備造成二次損壞或導致零件報廢。在接觸電氣控制箱之前，請務必確保遵循標準安全和停機掛牌 (LOTO) 程序。
官方故障排除步驟
Parameters: %1 = Bus number %2 = Slave address %3 = Name of the affected drive unit Definitions: The drive unit with the bus number and slave address specified in the alarm has detected an illegal difference between reference topology and actual topology during the ramp-up when checking the DRIVE-CLiQ topology. For this reason, the drive unit has stopped t he ramp-up in the 'Topology error' state. Reaction: Alarm display. Remedy: - Check actual topology and possibly repl ug in line with the actual topology. - Check DRIVE-CLiQ cables for breakage and problems with contacts. - Test DRIVE-CLiQ components for operational functioning. Note: Under 'Commissioning > Drive system > Drive unit > Topology', HMI offers a suitable diagnosis (e.g. reference/actual value comparison). Program Continuation: Internal
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.
關於 Siemens SINUMERIK 840D CNC 警報
由 Siemens 製造的工業控制器具有廣泛的診斷系統，用於保護內部電路和機械連桿。當 SINUMERIK 840D CNC 出現類似 120403 的錯誤代碼時，通常表示指令值與實際感測器回饋之間存在不匹配。
完整警報清單: 4014 Siemens SINUMERIK 840D CNC 代碼s.
Have a better solution?
Help the industrial community by sharing your repair experience for code 120403.
Need a searchable reference for more Siemens SINUMERIK 840D CNC manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026