Siemens Micromaster Profibus - Diagnostics and Troubleshooting

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PROFIBUS Optional Board Operating instructions
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½ You can operate a SIMATIC HMI and a drive together independently of the rest
of the automation system.
A simple "point-to-point" link with just two nodes is possible.
½ The HMI "Variables" functions can be used for drives. Other functions cannot
be used (e.g. "Messages" or "Recipes").
½ Individual parameter values can be accessed, but access operations to
complete arrays, descriptions or texts are not possible.
½ The diagnostic output on the SIMATIC HMI is limited. In the case of accessing
difficulties, the diagnostic parameters of the communication board, i.e.
r2054.03 and ff., will be helpful, see Chapter 7 "Diagnostics and
Troubleshooting".