Julabo Presto Plus LH 47, Operating Manual

Page: 61 / 76

61
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 VD Signal GND
Pin 6 DTR Data terminal ready
Pin 7 RTS Request to send
Pin 8 CTS Clear to send
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!
Interface correspondence:
Instrument Computer
⏐
Instrument Computer
9-pole 25-pole
⏐
9-pole 9-pole
Pin 2 RxD
⇔
Pin 2 TxD
⏐
Pin 2 RxD
⇔
Pin 3 TxD
Pin 3 TxD
⇔
Pin 3 RxD
⏐
Pin 3 TxD
⇔
Pin 2 RxD
Pin 5 GND
⇔
Pin 7 GND
⏐
Pin 5 GND
⇔
Pin 5 GND
Pin 6 DTR
⇔
Pin 6 DSR
⏐
Pin 7 RTS
⇔
Pin 5 CTS
⏐
Pin 7 RTS
⇔
Pin 8 CTS
Pin 8 CTS
⇔
Pin 4 RTS
⏐
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