Yokogawa F3RZ91-0F Ladder Communication ModuleSpecifications: Communication Protocols: RS 422 RS 485 Maximum Communication Speed: 115. 2 kbps Port: 1 port (isolated) Communication Distance: Up to 1200 meters Data Format: Character Length: 7 8 bits Stop Bit Length: 1 2 bits Parity Bit: None Odd Even Communication Buffer: Transmit Buffer: 1 text (maximum length 1792 bytes) Receive Buffer: 8192 bytes (FIFO buffer) Power Consumption: 350 mA Dimensions: 28. 9 (W) x 100 (H) x 83. 2 (D) mm Weight: 120 g