代碼 6405: [Channel %1: ] Command %2 has invalid PLC acknowledge parameter %3 - identifier %4
問題描述與安全警告
Siemens SINUMERIK 840D CNC 觸發了嚴重的 [Channel %1: ] Command %2 has invalid PLC acknowledge parameter %3 - identifier %4 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 = Channel ID %2 = Command no. %3 = PLC acknowledge parameter %4 = Error code Definitions: The specified command has been answered by the PLC with an invalid acknowledgement in the current context. The following assignments are defined for "command no.": 1 Move tool, load or unload magazine 2 Prepare tool change 3 Execute tool change 4 Prepare tool change and execute with T command 5 Prepare tool change and execute with M command 7 Terminate canceled tool command 8 Check tool movement with reservation 9 Check tool movement 0 Transport acknowledgement Parameters 2 and 3 designate the PLC command and the status number of the acknowledgement. Example: Parameter 4 of the alarm message is 10. It is not defined that a buffer location has to be reserved for asynchronous tool motion. In the exam ple, the parameter is ignored by the NCK. Further possible causes for the alarm: The tool change defined by the command is not possible. The magazine location specified in the invalid parameter does not exist in the magazine. The 3rd parameter - error identification - gives a more detailed description of the alarm. Meanings: - 0 = not defined - 1 = status not allowed or undefined status received by PLC - 2 = source and/or target magazine no./location no. unknown - 3 = not defined - 4 = target magazine no. and/or location no. ar e not the end target in the tool motion command - 5 = not defined - 6 = source and/or target magazine no./location no. unknown during tool change - 7 = PLC comm. with inconsistent data: either inconsistent magazine addresses in VDI or NCK command unequal to PLC acknowledgement or both - 8 = PLC comm. with inconsistent data: while re jecting a tool, the tool to be rejected was unloaded asynchronously. NCK cannot perform a new selection. - 9 = PLC comm. with inconsistent data: the command acknowledgement data wants to move a tool to a location that is occupied by another tool. - 10 = Asynchronous tool motion with reservation is only defined for the motion from a magazine to a buffer location. Reaction: NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm. Remedy: Please inform the authorized personnel/service dep artment. Erroneous PLC communication: Correct the PLC program. 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.
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 6405 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 6405.
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