ESD electronic CAN-CBM-PLC/331-1, Hardware Manual

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Connector Assignment
CAN-CBM-SIO1 / CAN-CBM-SIO4 / CAN-CBM-PLC/331-1
Hardware Rev. 2.0 36
The following table shows the connector Pin Assignment of the25 pole DSUB/male, if the CAN-CBM-
SIO4 should work as terminal in RS-232 operation, i.e. as transmitter.
The Pin Assignment of the other serial interfaces (RS-422, RS-485, TTY) results from this.
Attention:
This pin assignment is
not compatible
to the pin assignment of the serial interfaces of
the previous table. It is
only
for the RS-232-signals compatible (DTE-DCE-connection).
Connector Pin Signal arrangement
RJ45
socket
DSUB25
socket
RS-232 RS-422 RS-485
TTY-
passive
TTY-
active
1 1 - - - - -
2 14 -
Tx-
(out)
Rx/Tx-
Tx-
(out)
[GNDA]
3 2
TxD
Data Output
- - [I1+]
Tx+
(out)
4 16 -
Rx+
(in)
TERM+
*
1)
Rx+
(in)
Rx-
(in)
5 7 GND GND GND GND GND
6 3
RxD
Data Input
Tx+
(out)
Rx/Tx+
Tx+
(out)
Tx-
(out)
7 5
CTS
Handshake Input
GND GND [I2+]
Rx+
(in)
8 4
RTS *
2)
Handshake Output
Rx-
(in)
TERM-
*
1)
Rx-
(in)
[GNDA]
*1) The pins 4 and 8 of the sockets (P200/P230) lead to a terminal resistance which is on the piggyback. To activate
the terminal resistance the signal TERM+ has to be connected to Rx/Tx+ and the signal TERM- has to be
connected to the signal Rx/Tx-.
[ ] The signals shown in brackets are arranged but are not necessary for the operation of the interface.
*2)... An DTR signal is needed by some modems (Data from CBM-SIO4 -> terminal). If this is the case, the DTR signal
can be created by bridgeing the RTS signal in the connector on the DTR pin. With a 25-pin DSUB-connector pin
4 has to be bridged to pin 20 in this case.