Parker PAC, Installation Manual, Page: 49 / 197

3. The Green dot on the device indicates that the device was found and you are now connected to the
PAC.
Configure the EtherCAT_Master Task
For projects that require real-time synchronization via distributed clocks (i.e., servo drive applications),
use the following steps to configure the PAC as an EtherCAT master. This assumes that your EtherCAT
slave also supports distributed clocks functionality. If your PAC will only be used with the PACIO Modules,
the use of distributed clocks is not required. But if you are using the PAC with a servo drive such as the
Compax3, then these steps are required.
Note: For PAM versions 1.3.0 and higher, the EtherCAT_Master Task actions listed below were already set
by default.
1. In the Devices tree, double click the PLC Logic->Application->Task Configuration-
>EtherCAT_Master node to bring up the Task Configuration dialog.
2. In the Configuration dialog, change the Type to be External and the External event to be
EVENT_ECM_DC. Ensure that the Priority is set to 0. The Interval value is not set by the value in
this dialog box. It is set in the Cycletime in EtherCAT_Master_Node(see the next section)
***NOTE*** You MUST set the Type to External and the External Event to EVENT_ECM_DC to
have the EtherCAT and distributed clocks to run correctly.