JULABO LH 50 Highly Dynamic Temperature Control Systems - Manual (Page 63)

63
10. Electrical connections
Important:
Use shielded cables only.
The shield of the connecting cable is electrically connected to the
plug housing.
9 6
5 1
SERIAL
RS232/RS485 serial interface (3.5)
This port can be used to connect a computer with an RS232 or RS485
cable for remote control of the temperature system.
Pin assignments RS232:
Pin 2 RxD Receive Data
Pin 3 TxD Transmit Data
Pin 5 0 V Signal GND
Pin 7 RTS Request to send
Pin 8 CTS Clear to send
Pin 1; 4; 6, 9 Reserved - do not use!
Pin assignments: RS485
Pin 3
A
Pin 5 0 VD Signal GND
Pin 8 B
Pin 1; 2; 6; 7; 9
Reserved - do not use!
RS232 interface cable
Circulator (9-pol) PC (9-pol)
Pin 2 RxD

Pin 3 TxD
Pin 3 TxD

Pin 2 RxD
Pin 5 GND

Pin 5 GND
Pin 7 RTS

Pin 8 CTS
Pin 8 CTS

Pin 7 RTS
Accessories:
Order No. Description
8 980 073 RS232 interface cable 9-pol./9-pol. , 2,5 m
8 900 110 USB interface adapter cable