Code 701403: PLC_MD_wrong (tool arms min. lubrication)
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical PLC_MD_wrong (tool arms min. lubrication) 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
The option "minimal lubrication" was activated, but no correct tool arm was defined for lubricating via the tool arms. Feed Stop Read disable 1. The respective tool arms on which the lubricating system is integrated must be entered in the PLC machine data. PLC-MD 14510[45] = Lubrication 1, tool arm PLC-MD 14510[46] = Lubrication 2, tool arm Input value 0 = There is no lubrication via tool arm. 2. Once the tool arms are correctly defined, switch the control off with the [Control OFF] key. Message is cleared. The machine data is monitored for the following input: The input value of the tool arm is greater than the "number of tool places".
Source: CHIRON Error Message Overview, all series (Siemens control, V2.0.6, 2012)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Chiron Siemens-Control CNC Alarms
Chiron controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 701403 on the Siemens-Control CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Chiron's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 545 Chiron Siemens-Control CNC codes.
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