Code 8036: Option: it is not allo wed to set different IPO cycles or position control cycles with NCU link.
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical Option: it is not allo wed to set different IPO cycles or position control cycles with NCU link. 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
Definitions: The option for activating the FAST_IPO_LINK has not been set. For NCU link, all Ipo or position control cycles must then be equal (see FAST-IPO-LINK description). Reaction: NC not ready. Channel not ready. NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm. Remedy: - Buy option - Do not activate different Ipo or position control cycles (see MD10070 $MN_IPO_SYSCLOCK_TIME_RATIO and MD10060 $MN_POSCTRL_SYSCLOCK_TIME_RATIO). Program Continuation: Switch control OFF - ON.
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 8036 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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