126 JVL Industri Elektronik A/S - User Manual - Ethernet for MAC and MIS motors
5.4 Ethernet POWERLINK objects
5.4.3 Service Data Objects
Service Data Objects (SDOs) are mainly used for transferring non time-critical data, for
example, identification, configuration and acyclic data.
5.4.4 Object Dictionary
An important part of the protocol is the Object Dictionary, which is different objects
specifying the data layout. Each object is addressed using a 16-bit index and possibly a sub
index. There are some mandatory objects and some manufacturer specific objects. The
objects in the Object Dictionary can be accessed with SDO services.
Mandatory objects:
Name
Index
(hex)
Sub
Index
Data Type Read
only
Default Description
Device type 1000 UNSIGNED32 X 0x0
Contains information about the
device type.
Error
Register
1001 UNSIGNED8 X
This is the mapping error register,
and it is part of the emergency ob-
ject. If some of the sub index are
high, an error has occured.
0 Generic error. Mandatory
1 Current
2 Voltage
3 Temperature
4 Communication (Overrun)
5 Device profile specific
6 Reserved
7 Manufactor specific
Identity
object
1018 IDENTITY X
Contain general information about
the module
0 1..4 X 0x04 Number of entries. Mandatory
1 UNSIGNED32 X 0x0117
Vendor ID, contains a unique value
allocated to each manufactor.
117h is JVLs vendor ID.
Mandatory.
2 UNSIGNED32 X 0x0200
Product Code, identifies a specific
device version.
The MAC00-EL4/-EL41 has the
product code 200h
3 UNSIGNED32 X - Revision number.
4 UNSIGNED32 X Serial number
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