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9 Setting Up Slave Terminals
NX-series EtherCAT Coupler Unit User’s Manual (W519)
9-3 Assigning Variables
9
9-3-2 Assigning Device Variables to I/O Ports
Registering Device Variables
You assign device variables to I/O ports in the I/O Map of the Sysmac Studio. The device variables
that you create are registered in the variable table.
Device Variable Attributes
This section describes the attributes for the device variables that are used with the EtherCAT Slave Ter-
minal.
Registering Device Variables and Attributes
Attribute Specification method Changes to settings
Variable name There are three ways to assign a device variable.
• Select a registered variable from the variable table.
• Manually enter the device variable name.
• Automatically create the device variable name.
Variable names are automatically created using the fol-
lowing convention:
device_name+I/O_port_name
Possible.
Data type Specify the data type of the I/O port. You must also spec-
ify a data type of the same size as the data type of the I/O
port.
Not possible.
AT specification ECAT://node#[node_address.NX_Unit_number]/I/O_port
_name
Examples:
For an EtherCAT Coupler Unit whose node address is 10,
and a Digital Input Unit (NX-ID3317 Four-point Input Unit)
whose NX Unit number is 15:
ECAT://node#[10,15]/Input Bit 00 to
ECAT://node#[10,15]/Input Bit 03
Not possible.
Retain Not retained. Not possible.
Initial value None Possible.
Constant Do not specify a constant. Possible.
Network publish Do not publish. Possible.