Switching 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 Switching between RS232 and RS485

In the case of the RS232 interface, the handshake lines (RTS, CTS) are not
used. The RTS line from the master (PC or notebook), which is the CTS line for
the paperless recorder, will be ignored. The response is sent back immediately
by the paperless recorder. The CTS line of the master (RTS on the recorder)
remains open.
If the program that is used evaluates the handshake lines, then they must be
bridged in the cable.
(2) RxD
(3) TxD
(5) GND
Paperless recorder
(2) RxD
(3) TxD
(5) GND
Paperless recorder
The changeover between the RS232 and RS485 interfaces is made through
the paperless recorder parameter
!
Configuration Interfaces
or, using the setup program
!
Edit serial interface
3 Connecting the interface
! !
Interface1
! !
RS232/RS485
(2)
RxD
(3)
TxD
(5)
GND
(7)
RTS
(8)
CTS
PC or notebook
(2)
T x D
(3)
R x D
(4)
R T S
(5)
C T S
(7) GND
PC or notebook
!
General Type
Type
11