Siemens simatic hmi op27 Equipment Manual page 170

4. Use the four screws supplied ¸ to secure the control panel interface to the
Figure 18-10 Securing the control panel interface to the OP (example OP37)
Remove in the reverse sequence of the installation procedure.
OP27, OP37 Equipment Manual
Release 05/99
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OP (see Figure 18-10).
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