Siemens D410 Properties of the user memories, Non-volatile data Content, Properties Meaning

Commissioning (hardware) 2.5 User memory concept

2.5.2Properties of the user memories

Non-volatile data

Non-volatile data is used with the objective of retaining user- and system-relevant data when SIMOTION D410 is in de-energized state. You will find information about the area that can be used for non-volatile data in the SIMOTION SCOUT Configuration Manual.

Non-volatile data available in SIMOTION devices:

Table 2-1	Content of non-volatile data
Non-volatile data		Content
Kernel data		•	Last operating state
		• IP parameters (IP address, subnet mask, router address)
		• DP parameters (PROFIBUS DP address, baud rate)
		•	Diagnostics buffer
Retain variables		• Variables in the interface or implementation section of a unit declared
			with VAR_GLOBAL RETAIN
		• Global device variables set with the "RETAIN" attribute
Retain TO		Absolute encoder offset

Properties of non-volatile data of SIMOTION D410:

Table 2-2	Properties of non-volatile data
Properties		Meaning
Location:		Non-volatile data resides in the FRAM of SIMOTION D410.
Backup battery:		A backup battery is not required.
Backup time:		Unlimited

More information

IP and DP parameters in non-volatile data

The IP and DP parameters are loaded from configuration data on the CompactFlash Card during startup for use by the SIMOTION device. The SIMOTION D410 can use the addresses defined in these data to go online. The IP and DP parameters on the CompactFlash Card are also written to non-volatile memory during startup. The IP and DP parameters in non-volatile data is retained and used by the SIMOTION device if the system is restarted with a CompactFlash Card which does not contain any configuration data. The SIMOTION device can always be made available online if the configuration was downloaded to the device at least once using SIMOTION SCOUT, or if the SIMOTION device was started up with Compact Flash Card.

36	D410
	Commissioning Manual, 08/2008 Edition