代碼 5311: FSSB: ILLEGAL CONNECTION
問題描述與安全警告
Fanuc 16i/18i/21i CNC 觸發了嚴重的 FSSB: ILLEGAL CONNECTION 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
1. This alarm is issued if, in a pair of axes in which one axis has an odd servo axis number (parameter No. 1023) and the other has an even servo axis number that is adjacent to the odd servo axis number, one of the axes is assigned to an amplifier connected to an FSSB in a system different from that for the other axis. 2. This alarm is issued if the system does not satisfy a constraint for performing high–speed HRV control, current control periods for two FSSBs are different, and it is specified that pulse modules connected to an FSSB in different paths are to be used. ??? BP/S alarm BP/S alarm occurs in the same number as the P/S alarm that occurs in ordinary program edit. (P/S alarm No. 070, 071, 072, 073, 074, 085 to 087) Modify the program.
Source: Fanuc Series 16i/18i/21i-B Operator's Manual, Appendix G Alarm List (B-63864EN/03)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
關於 Fanuc 16i/18i/21i CNC 警報
由 Fanuc 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 16i/18i/21i CNC 出現類似 5311 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: 360 Fanuc 16i/18i/21i CNC 代碼s.
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