Siemens SIMATIC HMI OP 77B Operating Instructions Manual page 27

Release 03/2004
Power supply
Caution
Ensure safe electrical insulation of the power supply.
Use only power supply units complying with
IEC 364-4-41 or HD 384.04.41 (VDE 0100, Part 410).
Only use mains apparatus which complies to SELV
(Safety Extra Low Voltage) and PELV (Protective Extra
Low Voltage) standards.
The supply voltage must be within the specified voltage
range. Voltages outside this range can cause HMI
device malfunctions.
The requirements of the voltage supply are set out in
Chapter 1.5.
Switching on the HMI device
Proceed as follows:
Connecting the terminal block to the HMI device.
 
Switch on the power supply to the HMI device.
 
The following window appears:
Bootloader
Version x.xx
Date: xx.xx.xxxx
Figure 4–8 Bootloader
If the HMI device does not run-up, it is possible that
the lines on the terminal block have been swapped
over. Swap the connected lines back.
Operating Instructions (Compact) OP 77B
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B 7.0.0.xx
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