Siemens S7-400PLC Dokumentacja Strona 58

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Power supply modules
3.4 Operator controls and indicators
S7-400 Automation System Module Data
58 Reference Manual, Edition 09/2009, A5E00850736-06
Cover
The battery compartment, battery selector switch, voltage selector switch and power
connection are housed under one cover. The cover must remain closed during operation in
order to protect these operator controls and to prevent static electricity from affecting the
battery connections.
Discharge your body before you start taking any measurements on a module. Do so by
touching grounded metallic parts. Always use grounded measuring instruments.
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