One Expansion Unit can be added to each Digital I/O Slave Unit.
This makes a variety of I/O combinations possible, such as 16 inputs + 8 outputs, extending the range of possible system configurations.

• Flexible expansion with many different combinations.
• Removable I/O terminal block enables faster startup time and improved maintainability.
• Collect various preventive maintenance data required to improve productivity, such as information on equipment deterioration due to aging and equipment operating time data.