Hardware reference
HARDWARE REFERENCE MANUAL
75
Revision 5.0
Serial connector
fig. 22
The serial connector allows for three communication standards:
•
RS232.
•
RS422.
•
RS485.
/i
TERM ON/OFF Switch
Sets the termination on/off of the RS422 / 485 serial connection. The setting
of the TERM ON/OFF switch depends on the communication standard of the
serial connection and the position of the TJ2-MC__ in the network:
/i
9
8
7
6
5
4
3
2
1
Pin
Communication
Connection
1
RS422/RS485
/Tx
2
RS232
Tx
3
RS232
Rx
4
N/C
N/C
5
N/C
N/C
6
RS422/RS485
/Rx
7
RS422/RS485
Tx
8
RS422/RS485
Rx
9
RS232
0 V
Communication
standard
Position of the TJ2-MC__
Setting of the TERM ON/OFF
switch
RS422 or RS485
First or last
Left (on)
RS422 or RS485
Not the first and not the last
Right (off)