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System Description
KUHNKE Automation
18
4.3 RS-232/RS-485 or CAN (X9)
4.3.1 Option: RS-232/RS-485
Pin Name
Description
Level
1
GND
Ground
2
RS232_TXD1
Port#1: Transmit data (Output)
3
RS232_RXD1
Port#1: Receive data (Input)
4
RS232_RTS1
Port#1: Request-to-send (Output)
5
RS232_CTS1
Port#1: Clear-to-send (Input)
6
Vref
Vref out
5V
7
GND
Ground
8
RS485_Y
TX+
9
RS485_Z
TX-
10
RS485_A
RX+
To enable Half-Duplex: bridge with RS485_Y
11
RS485_B
RX-
To enable Half-Duplex: bridge with RS485_Z
12
RS485_TERM
To enable RS485-Termination: bridge with
RS485_A
Header:
Molex_43045-1200_Micro-Fit_12p
Plug: Molex_43025-1200_Micro-Fit_12p, crimp contact Molex 43030-0007
4.3.2 Option: RS-232/CAN
Pin Name
Description
Level
1-5 RS-232
Identical to RS-485 option (s. 4.3.1.)
6
Vref
Vref out
5V
7
GND
Ground
8
CAN1_H
CAN bus 1 high
9
CAN1_L
CAN bus 1 low
10
CAN1_TERM
To enable CAN1-Termination, bridge with
CAN1_L
11
n.a.
12
n.a.
4.4 USB - Host (X12)
Pin Name
Description
Level
1
Vcc
Power supply
5 V
2
D-
Data minus
3
D+
Data plus
4
GND
Ground