Parker PAC, Installation Manual, Page: 17 / 197

PACIO Modules
The PACIO Modules are attached to the PAC Controller to process input and output signals and
communications from the Controller to each of the Modules is via an internal EtherCAT E-Bus network.
The first PACIO Module plugs into the E-Bus connector on the PAC Controller, and each additional Module
plugs in to the proceeding Module, making a chain of up to 20 interconnected Modules. You choose from a
variety of PACIO Modules to add, based on the requirements of your specific application. The selection of
PACIO Modules consists of several different types including a variety of digital or analog input/output
modules, a counter/encoder module, temperature modules, interface modules, and a bus coupler (for
connecting additional PACIO Modules).
Internally, the PAC converts twisted pair EtherCAT to LVDS EtherCAT (E-Bus) and also provides the
module power required by the PACIO Modules. At the end of the modular devices, the connection between
the forward and return lines is automatically closed. This allows an EtherCAT bus coupler to be added to
the external EtherCAT RJ45 connector to provide for additional local or remote PACIO Modules or motor
drives.