Code 700030: PLC-MD wrong (probe )
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical PLC-MD wrong (probe ) 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
PLC machine parameter 14510[0] Bit 0 = 1 (with probe), but the probe is not present or signals not plugged in. PLC – MD 14510[0] Bit 0 = 0 (without probe), but the probe is still present or signals still plugged in. PLC – MD 14510[0] Bit 0 = 1 (with probe) is set, but in PLC machine parameter 14510[17], no correct tool place was entered for the probe. The error has the following effect: Feed Stop No axis movements possible. Read disable Control reads no further program blocks into memory. 1. Check the input "Probe plugged in" or PLC machine parameter 14510[0] Bit 0. 2. Once the malfunction has been eliminated, switch off the control with the [Control OFF] key 3. Press key [Control ON] Message is cleared. Enter the tool place where the probe is located in the PLC machine parameter 14510[17]. a) Permissible combinations: PLC-MD 14510[0]#0 = 0 and input "Probe plugged in" = 0 PLC-MD 14510[0]#0 = 1 and input "Probe plugged in" = 1 b) Monitoring for this occurs as soon as: 2.) Input is [0]. Cause 1: Cause 2: Remedy 1 Remedy 2 Note 1 Note 2 3.) Input 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 700030 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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