Standard I/O Interface Overview - Yamaha RCX221 User Manual

1. Standard I/O interface over view
To connect the RCX controller to an external device such as a PLC, signal input/output
DIO option boards are available. Up to two DIO option boards can be installed in each
unit of the RCX22 series. There are two types of DIO option boards: NPN and PNP
specifications. Inputs to the controller are referred to as DI (Digital Inputs) and outputs
from the controller as DO (Digital Outputs).
n
NOTE
See "7. I/O connections" in Chapter 3 for a defi nition of NPN and PNP
specifi cations.
■ DIO option board
(1) Power connector..... Connector for DC 24V power supply
(2) IO connector .......... Connector for I/O signals
(3) DIP switch ............. Switch for setting the board ID
(1)
(2)
(3)
1. Standard I/O interface over view
Chapter
5
5-1