代码 MOTN-209: Modify Singular Dest(L:%d)
问题描述与安全警告
Fanuc R-30i Series Robot Controller 触发了严重的 Modify Singular Dest(L:%d) 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
Cause: This warning message indicates that the taught position at the specific line is inside a singularity zone. By default, the system modifies it in order to control the rotation of axis 4. If $ra_prarmgrp[].$use_strt_j4 = TRUE, the Auto 4.ERROR CODES B-83124EN-6/02 Singularity Avoidance function will internally modify the destination position when it is inside a pre-defined singularity zone in the following way: z The joint angle of Axis 4 is kept the same as the value of the previous position z The TCP location (x, y and z) of the position is the same as it was taught (no location error) z The orientation (w, p and r) of the position is kept as close to the taught position as possible (minimal orientation error) This warning message is posted only when the program motion is executed under T1/T2 mode and $ra_paramgrp[].$warnmessenb = TRUE. Remedy: If you do not want the system to modify the singularity point, set $ra_paramgrp[].$use_strt_j4 = FALSE.
Source: FANUC Robot R-30iA Alarm Code List Operator's Manual
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
关于 Fanuc R-30i Series Robot Controller 警报
由 Fanuc 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 R-30i Series Robot Controller 出现类似 MOTN-209 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。
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