Service and maintenance
11.7 Expansion and parameter assignment
SIMATIC HMI IPC677C
122 Operating Instructions, 04/2013, A5E02722710-04
Tools
You can perform all installation tasks on the device using Torx T6, T10, T15 and T20
screwdrivers.
Preparation
Disconnect the device from the mains.
Disclaimer of liability
All technical data and approvals apply only to expansion units which are released by
SIEMENS.
Siemens disclaims any liability for impairment of functions caused by the use of third-party
devices or components.
Observe the installation instructions for the components. UL approval of the device only
applies when the UL-approved components are used according to their "Conditions of
Acceptability".
Procedure
Steps for opening the device
1
Remove the screws â‘ .

2 Swing the cover up and remove
it.
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