Manual
MAN0884-04-EN Specifications / Installation
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3/2/2010 Page 3 of 4 #1037
4.2 External DIP Switch Settings
MJ2 Pinouts in Half and Full Duplex Modes
Table - Ports and Functions
Functions Port 1 (MJ1) Port 2 (MJ2)
RS-232
Hardware Handshaking
X
Programming
X
Ladder function
controlled
Serial Downloable
Protocols
RS 485 Full duplex
X
RS 485 Half duplex
4.1 Serial Communications:
MJ1: (RS-232 / RS-485) Use for Cscape programming and
Application-Defined Communications.
MJ2: (RS-232 / RS-485) Use for Application-Defined
Communications.
As seen when looking at the
side of the XL6 unit:
The DIP Switches are used for
termination of the RS-
485 ports. The
XL6 is shipped un-terminated.
To terminate, select one of the DIP
Switches and configure it based upon
the option that is desired.
Pin
MJ1 Pins MJ2 Pins
Signal Direction Signal Direction
8
TXD OUT TXD OUT
7
RXD IN RXD IN
6
0 V Ground 0 V Ground
5*
+5 60mA OUT +5 60mA OUT
4
RTS OUT TX- OUT
3
CTS IN TX+ OUT
2
RX- / TX- IN / OUT RX- IN
1
RX+ / TX+ IN / OUT RX+ IN
1
8
* +5V 60mA Max
MJ2 Half Duplex Mode
Pin
MJ2 Pins
Signal Direction
8
TXD OUT
7
RXD IN
6
0 V Ground
5*
+5 60mA OUT
4
TX- OUT
3
TX+ OUT
2
TX-/RX- IN/OUT
1
TX+/RX+ IN/OUT
1
8
Pin
MJ2 Pins
Signal Direction
8
TXD OUT
7
RXD IN
6
0 V Ground
5*
+5 60mA OUT
4
TX- OUT
3
TX+ OUT
2
RX- IN
1
RX+ IN
1
8
MJ2 Full Duplex Mode
* +5V 60mA Max
SW1 - ON enables MJ2 RS485 port termination (121 Ohms).
OFF disables MJ2 RS485 port termination.
SW2 & SW3 - ON places MJ2 RS485 port in half-duplex mode.
OFF places MJ2 RS485 port in full-duplex mode.
SW4 - ON enables MJ1 RS485 port termination (121 Ohms).
OFF disables MJ1 RS485 port termination.
MJ1
MJ2
On
Off
On
Off
On
Off