Drive Parameter Access; Explicit Messaging - Siemens SINAMICS S120 Manual

8 Drive Parameter Access

Drive Parameter Access
8
8.1

Explicit Messaging

In many applications it is necessary to read or write parameters in the drive. This
allows increased flexibility in implementation of the machine functionality.
To allow this occasional (acyclic) data exchange of drive and motor parameters,
the CU310-2 PN and Cu320-2 PN support explicit messaging.
The MSG instruction can read from or write to a parameter by accessing the drive's
communication object. When parameterizing the MSG instruction, below are some
important parameters:
Class = 400hex + drive object number
DO 1
DO 2
...
DO62
Instance = parameter number
p1027 = instance 1027
Attribute = parameter index number (hex)
Index 0
Index 1
...
Index 65535
Get attribute single = read a parameter
Set attribute single = write a parameter
SINAMICS S: Speed control of a S120 with an Allen-Bradley controller
(Compact/ ControlLogix with RSLogix 5000) via EtherNet/IP
Entry-ID: 92045369, V4.0,
= class 401h
= class 402h
= class 43Eh
= attribute 0
= attribute 1
= attribute FFFFh
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