Siemens 6RA7086-6KS22 Operating Instructions Manual page 384

6ra70 series, microprocessor-based converters from 6kw to 2500kw for variable-speed dc drives, simoreg dc master

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Function descriptions

connector at two contiguous indices of the selection parameter.

Diagnostics and monitoring functions for peer-to-peer link

All transmitted and received useful data words can be checked (directly at the internal software

transfer point from/to peer driver) by means of display parameters r812 / r813 or r814 / r815.

Diagnostic parameters r799 or r809 provide information about the chronological distribution of errored

and error-free telegrams, as well as the nature of any communication errors that have occurred. A

watchdog can be set in P797 or P807 which can initiate a shutdown on faults (F012 or F013) in the

case of timeout. By connecting binectors B6031 or B9031 to the fault message triggers (using

P798=6031 / P808=9031), it is possible to acknowledge these fault messages even if the fault is

active continuously, thereby ensuring that the drive can still be operated manually after the peer-to-

peer interface has failed.

The serial interfaces for the peer-to-peer protocol are parameterized with the same parameters used

to configure the USS protocol, although the setting ranges are different in some cases (see Notes for

relevant parameters in Parameter List, Section 11).

Peer-to-peer communication, 4-wire operation

Serial linking of converter to converter (partners of equal status).

The signal flow can pass through the drives, for example, in a series connection. In this case, each

drive forwards the data after processing only to the next drive (classic setpoint cascade).

double-word connectors

SIMOREG DC Master

Operating Instructions

6RX1700-0AD76

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