Emerson PACSystems RX3i, User Manual

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RSTI-EP PROFINET I/O Controller User Manual Section 4
GFK-2571R May 2021
PROFINET System Operation 93
RIVs are assigned in PAC Machine Edition by editing the Properties for a PROFINET Controller
or IO Device in the hardware configuration.
Reference ID Variable Data Types
Data Type Associated With
PNIO_CONTROLLER_REF PACSystems PROFINET Controller
PNIO_DEVICE_REF PROFINET IO-Device
PNIO_CONTROLLER_REF Variable
Each PACSystems PROFINET Controller can have a PNIO_CONTROLLER_REF variable
assigned to it.
When assigned, it is linked to the PROFINET Controller and its value cannot be changed. If a
linked PNIO_CONTROLLER_REF variable is present, the application logic and hardware
configuration are coupled. The name of the PNIO_CONTROLLER_REF linked variable
corresponds to the controller’s Device Name used in the hardware configuration to identify
the module on the PROFINET network. Whenever the PNIO_CONTROLLER_REF variable is
renamed, PAC Machine Edition will make sure all uses of that variable in logic convert to the
new variable name.
Unlinked PNIO_CONTROLLER_REF variables can be passed to the IN and Q parameters of
the MOVE_DATA function block. Linked PNIO_CONTROLLER_REF variables can only be
passed to the IN parameter of the MOVE_DATA function block.
PNIO_DEVICE_REF Variable
An RIV of type PNIO_DEVICE_REF uniquely identifies a PROFINET IO-Device. It is an unsigned
integer in the range of 1
– 255.
Each PROFINET IO-Device in an PACSystems hardware configuration can have a
PNIO_DEVICE_REF variable assigned to it. When assigned, it is linked to a PROFINET IO-
Device. When a linked PNIO_DEVICE_REF is present, the logic and hardware configuration
are coupled. The name of the PNIO_DEVICE_REF linked variable corresponds to a
combination of the LAN ID and the Device Name used to identify the IO-Device on that LAN.
Whenever the PNIO_DEVICE_REF variable is renamed, PAC Machine Edition will make sure
all uses of that variable in logic convert to the new variable name.
Unlinked PNIO_DEVICE_REF variables can be passed to the IN and Q parameters of the
MOVE_DATA function block. Linked PNIO_DEVICE_REF variables can only be passed to the
IN parameter of the MOVE_DATA function block.