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Manual PD4-C (USB)
12 Object directory description
Version: 1.4.1 / 22.07.2016 / FIR-v1626
84
12.4 Value description
Note
For reasons of clarity, some subentries have been summarized here when all the entries have the
same name.
All data for subentries with sub-index 1 or higher are listed in the table with the heading "Value
description". The table contains the following entries:
Sub-index
Number of the currently specified subentry.
Name
The name of the subentry.
Data type
The size and interpretation of the subentry are specified here. The following notation always
applies:
•
Distinction is drawn between entries that are signed; this is designated with the prefix
"SIGNED". The prefix "UNSIGNED" is used for unsigned entries.
•
The size of the variable in bits is added to the prefix and can be either 8, 16 or 32.
Access
The access restriction for the subentry is entered here. The following restrictions are available:
•
"Read/write": The object can be read and written
•
"Read only": The object can only be read from the object directory. It is not possible to set a
value.
PDO Mapping
Some bus systems, such as CANopen or EtherCAT, support PDO mapping. This table entry
specifies whether the subentry may be inserted in a mapping, and in which. The following
designations are possible:
•
"no": The object may not be entered in any mapping.
•
"TX-PDO": The object may in be entered in a RX mapping.
•
"RX-PDO": The object may in be entered in a TX mapping.
Admissible Values
In some cases, it is only permitted to write specific values into the subentry. When this is the
case, these values are listed here. The field remains empty when there is no restriction.
Specified Value
Some objects must be preassigned with subentries to bring the motor controller into a safe state
at switch on. The value written into the subentry for the motor controller start is noted in this
table entry.
12.5 Description
This section can be available when use requires additional information. When single bits of an object or
subentry have a different meaning, diagrams are used as shown in the following example.
Example: The object is 8-bits large, bit 0 and 1 separately have one function. Bits 2 and 3 have been
combined into one function, the same apples for bits 4 to 7.