CTC Union ICR-4103 - Serial Port COM2 (RS-232); Serial Port COM3 (RS-485)

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CHAPTER 2.
HARDWARE INSTALLATION
2.11 Serial Port COM2 (RS-232)
The serial port COM2 is a RS-232 interface.
Pin
Description
RXD
COM2 Serial Port, RXD Signal (INPUT)
TXD
COM2 Serial Port, TXD Signal (OUTPUT)
GND
COM2 Serial Port, Signal Ground
2.12 Serial Port COM3 (RS-485)
The serial port COM3 is a RS-485 interface.
Pin
Description
D -
COM3 Serial Port, Data- (B) wire
D +
COM3 Serial Port, Data+ (A) wire