Code 14780: [Channel %1: ] Block %2 unreleased option used (identification %3)
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical [Channel %1: ] Block %2 unreleased option used (identification %3) alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Parameters: %1 = Channel number %2 = Block number, label %3 = Fine ID Definitions: A non-released option has been used in the block. Identifier Brief description 1 LaserCtrl option 2 ClearCtrl option 3 FeedAdapt option 4 AaTOff option 5 Tang option 6 LeadCtab option 7 ELG option 8 Trafo5 option 9 Traoem option 10 Transmit option 11 Tracon option 12 Tracyl option 13 Traang option 14 Oscill option 15 SynSpi option 16 Repos option 17 Spline option 18 Involute option 19 Poly option 20 Compress option 23 Masl option 24 ExtLang or ExtLanguage option not activated 25 TechCycle option 26 Liftfast option 27 ProgAccel option 33 AllAsupSynact option 34 CmdAxSpind option 35 Mea2 option 36 ProgAnaOut option 37 OptAaTOff option 41 MachineMaintenance option 42 PathFeedSAInput option 45 ElecTransfer option 46 Cut3D option 47 CDA option 48 Reserved: generic coupling option 49 Measuring cycles option 50 ForceControl option Reaction: Correction block is reorganized. Interface signals are set. Alarm display. Remedy: Modify part program, retrofit option. Program Continuation: Clear alarm with NC ST ART or RESET key and continue the 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.
About Siemens SINUMERIK 840D CNC Alarms
Siemens controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 14780 on the SINUMERIK 840D CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Siemens's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 4014 Siemens SINUMERIK 840D CNC codes.
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