Toggling Between Rs232 And Rs485; Rs232 - JUMO LOGOSCREEN nt Interface Description

3.2 RS232

PC COM
interface with 9-
pin Sub-D
socket
PC COM
interface with
25-pin Sub-D
socket

3.3 Toggling between RS232 and RS485

The RS232 interface does not use the handshake lines (RTS, CTS). The RTS
line (CTS on the paperless recorder) coming from the master (PC or notebook)
is not taken into consideration. The response is immediately transmitted from
the paperless recorder. The CTS line of the master (RTS on the paperless
recorder) remains open.
If the used program evaluates the handshake lines, they must be bridged in
the cable.
(2) RxD
(3) TxD
(5) GND
Paperless recorder
(2) RxD
(3) TxD
(5) GND
Paperless recorder
Toggling between RS232 and RS485 interface is carried out by means of the
paperless recorder parameter

Configuration Interface
or via the setup program

Edit Serial interface
3 Connecting the interface

RS232/RS485
 
RS232/RS485
(2)
RxD
(3)
TxD
(5)
GND
(7) RTS
(8)
CTS
PC/notebook
(2)
T x D
(3)
R x D
(4) R T S
(5)
C T S
(7)
GND
PC/notebook
 
General Type
Type
11