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4
EtherCAT interface
Festo – GDCP-CMMP-M3/-M0-C-CO-EN – 1510b – English
57
The name “Number of assigned PDOs” assigned by the EtherCAT specification for
Sub-index 0 of these objects is confusing here, as Sync Manager channels 0 and 1 are
always allocated through the mailbox telegram. SDOs are always transmitted in this
telegram type under EtherCAT CoE. Sub-index 0 of these two objects is therefore unused.
Object 1C11
h
- Sync Manager Channel 1 (Mailbox Send)
This object allows a PDO to be configured for Sync channel 1. As Sync channel 1 is always allocated to
the mailbox telegram protocol, the user cannot change this object. The object therefore always has the
following values:
Index
1C11
h
Name
Sync Manager Channel 1 (Mailbox Send)
Object Code
Array
Data Type
uint8
Sub-Index
00
h
Description
Number of assigned PDOs
Access
ro
PDO Mapping
no
Value Range
0 (no PDO assigned to this channel)
Default Value
0 (no PDO assigned to this channel)
Object 1C12
h
- Sync Manager Channel 2 (Process Data Output)
This object allows a PDO to be configured for Sync channel 2. Sync channel 2 is permanently assigned
for the reception of Receive PDOs (Master => Slave). In this object, the number of PDOs assigned to this
Sync channel must be set under sub-index 0.
The object number of the PDO to be allocated to the channel is subsequently entered in sub-indices
1to 4. Only the object numbers of the previously configured Receive PDOs can be used for this
(object1600
h
… 1603
h
).
In the current implementation, the data of the objects below is not evaluated further by the firmware of
the motor controller.
The CANopen configuration of the PDOs is used for evaluation under EtherCAT.
Index
1C12
h
Name
Sync Manager Channel 2 (Process Data Output)
Object Code
Array
Data Type
uint8