GE VersaPoint IC220PBI002, User Manual

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8-34 VersaPoint™ I/O System Profibus-DP NIU User’s Manual – August 2005 GFK-1911B
8
Index 8: Read/write ID Access: Read and write
Length = 2 bytes
Each Profibus NIU, PBI002, can be assigned an individual ID. This ID is stored
retentively and can be used to identify a station if it was disconnected from the
power supply. This means that several stations can be operated alternately under
the same station address in Profibus. The ID can also be read cyclically in the
process data.
Index 9: Module Parameters (Power Up)
Module parameters can be stored here if there is a longer period of time between
powering up the I/O Station and establishing a connection to the PLC, in which
failsafe values are to be output, for example. The parameterization from the
hardware configuration is then enabled with the PLC parameter telegram.
Index 10: Set Active Configuration as Power Up Configuration
The active configuration is set as the reference configuration. Before the PLC
configuration telegram is evaluated, a check is carried out during powerup to
determine whether the active configuration corresponds to the last configuration
used. If it does not correspond, the station is not started and an error is indicated.
This is particularly important in conjunction with index 9 (e.g., for retentively stored
failsafe values).
Index 11: Delete Saved Configuration
All data that has not been stored retentively can be deleted (write 01
hex
). The
device is thus returned to its default state.
Index 47: PCP Data With Invoke ID
Index 47 is a parameter on the NIU. It is used to establish the connection between
the master and I/O module for DP/V1/PCP communication. It is used when the
Invoke ID is to be transmitted.
Index 48: PCP Data
Index 48 is a parameter on the NIU. It is used to establish the connection between
the master and I/O module for DP/V1/PCP communication. The slot number (1 to
63) is required.