JULABO Magnum 91 Temperature System - Manual (Page 61)

Temperature System Magnum 91
61
10. Electrical connections
Notice:
Use shielded cables only.
The shield of the connecting cable is electrically connected to the plug housing.
The unit ensures safe operation if connecting cables with a maximum length of 3 m are used.
The use of longer cables does not affect proper performance of the unit, however external
interferences may have a negative impact on safe operation.
9 6
5 1
SERIAL
RS232/RS485 serial interface
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!
Accessories: Order
No. Description
8 980 073 RS232 interface cable 9-pol./9-pol. , 2,5 m
8 900 110 USB interface adapter cable
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