Siemens A01358

What the Fault Means

Alarm: Topology: Line termination not available

Likely causes

• At least one line with distributed drives is not terminated
• The last participant on the line must be terminated with a line termination connector
• This therefore ensures the degree of protection of the distributed drives
• Alarm value (r2124, interpret hexadecimal): zzyyxx hex: zz = connection number of the distributed drive where there is no terminating connector yy = component number xx = CU connection number

Solution and Safe First Checks

1. Install the line terminating connector for the last distributed drive.

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

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