What causes Siemens SINUMERIK alarm 101018?

Normal control operation generated this status message. User action or program command triggered this notification. System configuration or commissioning activity produced this message. Machine data or parameter change created this notification.

How do I fix Siemens SINUMERIK alarm 101018?

1. Read the complete message text on the SINUMERIK screen — note any parameter values shown. 2. If action is required, follow the instructions in the message. 3. Acknowledge the message on the operator panel to continue operation. 4. Consult the Siemens SINUMERIK alarm documentation for message 101018 if clarification is needed. 5. If this message appears unexpectedly, review recent parameter or configuration changes.

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Siemens SINUMERIK Controller

PLC · Intermediate · 30-120 minutes

Alarm 101018

Siemens 840D 101018 - Read-in possible only in active PLC status !

Alarm 101018 occurs when attempting to read-in or download PLC program data while the PLC is not in the active operational status mode. This typically happens when the PLC is in edit mode, change mode, or another non-active state that prevents program modifications from being accepted. The system protects against potential conflicts by blocking read-in operations until the PLC returns to active status.

Siemens SINUMERIKPLCIntermediate30-120 minutes

101018

Siemens 840D 101018 - Read-in possible only in active PLC status !

Read-in possible only in active PLC status !

Root Cause Summary

Alarm 101018 occurs when attempting to read-in or download PLC program data while the PLC is not in the active operational status mode. This typically happens when the PLC is in edit mode, change mode, or another non-active state that prevents program modifications from being accepted. The system protects against potential conflicts by blocking read-in operations until the PLC returns to active status.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Navigate to the PLC screen by pressing the 'PLC' softkey from the main menu
2
Check the current PLC status display in the upper section of the screen - verify if it shows 'CHANGE', 'EDIT', or another non-active state
3
Press the 'Active' softkey or select 'Status' then 'Active' to switch the PLC back to active operational mode
Switching to active mode will make any edited PLC code become effective immediately. Ensure any changes are tested and verified.
4
Retry the read-in operation after confirming the PLC status shows 'ACTIVE'

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