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代码 10721: [Channel %1: ] Block %3 axis %2 software limit switch %4

问题描述与安全警告

Siemens SINUMERIK 840D CNC 触发了严重的 [Channel %1: ] Block %3 axis %2 software limit switch %4 警报。需要由合格的操作员或维修技师立即处理,以防止在制造周期中对设备造成二次损坏或导致零件报废。在接触电气控制箱之前,请务必确保遵循标准安全和停机挂牌 (LOTO) 程序。

官方故障排除步骤

Parameters: %1 = Channel number %2 = Axis name, spindle number %3 = Block number, label %4 = String ( + or - ) Definitions: The motion planned for the axis violates t he currently valid software limit switch. The alarm is activated during the preproce ssing of approach or rest blocks for REPOS. Depending on MD11411 $MN_ENABLE_ALARM_MASK, bit11=0 this alarm is output instead of alarm 10723. If this MD11411 $MN_ENABLE_ALARM_MASK, bit11 is set in this machine data $MN_ENABLE_ALARM_MASK, an expanded diagnostics opt ion is offered for the software limit switch violation. The condition for activation is the presence of the ALUN* alarm file in the HMI. See also the Diagnostics Manual for alarm 10723. Reaction: Local alarm reaction. Interface signals are set. Alarm display. Remedy: Determine the cause of the offset from the initial or target position. The REPOS command is executed at the end of an ASUB or system ASUB. See also cross reference from ASUBs. Check the axis-specific NC/PLC interface signals DB 31,... DBX12.3 / 12.2 (2nd software limit switch plus/minus) to see whether the 2nd software limit switch is selected. Check the currently active work offset via the current frame. Also check the external work offsets, overlaid movements ($AA_OFF), DRF and transformation components. Cancel the NC program with NC reset. 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.

关于 Siemens SINUMERIK 840D CNC 警报

由 Siemens 制造的工业控制器具有广泛的诊断系统,用于保护内部电路和机械连杆。当 SINUMERIK 840D CNC 出现类似 10721 的错误代码时,通常表示指令值与实际传感器反馈之间存在不匹配。

完整报警清单: 4014 Siemens SINUMERIK 840D CNC 代码s.

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