Pin Assignment Of The Serial Interface - Siemens TIM 1531 IRC Operating Instructions Manual

Technical specifications

8.3 Pin assignment of the serial interface

8.3 Pin assignment of the serial interface
Pin assignment of the serial interface X4 (RS-232 / RS-485)
The table below shows the pin assignment of the 9-pin D-sub miniature plug of the serial
interface. The interface corresponds to the connector assignment of a standardized PC
connector.
Table 8- 2
296
Pinout of the plug of the serial interface
Illustration Pin no.
1
2
3
4
5
6
7
8
9
Schirm
; DCE = data communication equipment (connected modem)
1
; DTE = data terminal equipment (TIM / CP)
2
Fore the switchover RS-232 ↔ RS-485 see section .
3
Signal Meaning / remarks
name
DCD Received signal level
The DCE reports the input of data to be sent to
the DTE (connection establishment).
RxD Received data (DCE → DTE)
Switchover to RS-485 by configuration
TxD Send data (DTE → DCE)
Switchover to RS-485 by configuration
DTR DTE signals readiness to sent to DCE.
GND Reference mass of the interface
DSR DCE reports readiness for operation to DTE.
RTS Turn on transmitter
The DTE requests the DCE to send data on the
data cable. The DTE waits for confirmation of
the readiness to to send (CTS) of the DCE.
CTS Ready to send
The DCE can transfer the data coming from the
DTE.
- -
- On connector housing
Operating Instructions, 02/2018, C79000-G8976-C468-02
Signal
direction
Input
,
1 2
Input
3
Output
3
Output
Input
Output
Input
-
-
TIM 1531 IRC