Siemens SIMATIC HMI KTP400 Basic Operating Instructions Manual page 20

Safety instructions
2.2 Notes about usage
Use with additional measures
The HMI device should not be used at the following locations unless additional measures are
taken:
● In locations with a high degree of ionizing radiation
● In locations with severe operating conditions, for example, due to:
– Corrosive vapors, gases, oils or chemicals
– Strong electrical or magnetic fields of high intensity
● In systems that require special monitoring, for example, in:
– Elevators
– Systems in especially hazardous rooms
Notes on communication
Note
Communication errors caused by address conflict
Communication errors can occur if several devices in a network share the same bus address
or IP address.
Make sure that your HMI device is assigned a unique address in the network.
Note
Updating tag values following a communication error
If communication between an HMI device and controller is interrupted, all tag values
displayed on the HMI device will be replaced by a hash mark ("#").
When the communication between the HMI device and controller is restored, all tag values
will be updated immediately. The cycle time for updating the tag values begins again at "0".
Ethernet communication with Basic Panels with PROFINET interface
Basic Panels with PROFINET interface support the following types of communication:
• PROFINET basic function for commissioning and diagnostics
• Standard Ethernet communication
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Basic Panels 2nd Generation
Operating Instructions, 10/2016, A5E33293231-AB