Siemens SIMATIC BusAdapter BA 2xRJ45VD HA Operating Instructions Manual page 24

Mounting
4.5 Mounting tensile strain relief
Removal
To remove strain relief from the device, follow the steps below:
1. Release the cable from the strain relief and pull the cable.
2. Remove the bus adapter, see section "Mounting bus adapters (Page 21)".
3. Loosen the screw connection.
4. Remove the strain relief.
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Operating Instructions, 06/2018, C79000-G8976-C472-01
SIMATIC BusAdapter