Installing The Direct Key Module - Siemens simatic hmi op27 Equipment Manual

18.2.1

Installing the Direct Key Module

An OP27 or an OP37 can accommodate either a direct key module or a control
panel interface (Section 18.3). The procedure for installing a direct key module
is as follows:
!
1. Set the OP down with its front plate facing downwards.
2. Release the two pop rivets ¶ and then remove the cover · indicated in
Figure 18-4 Removing the cover (example OP37)
OP27, OP37 Equipment Manual
Release 05/99
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Caution
S
Make sure that the OP is disconnected from the power supply.
S
Always follow the ESD guidelines in the Appendix when working on open
devices.
Figure 18-4 from the rear panel of the OP.
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Options
18-5