PLR6430 I/O Remote or I/O to I/O PLR6430 I/O Remote or I/O to I/O PLR6430 I/O to I/O Interface Operates as Master (I/O to I/O only), Remote, Repeater and Repeater/Remote 8 Discrete Inputs, 8 Discrete Outputs, 4 Analog Inputs and 4 Analog Outputs User Guide