Installation guide

26 Specifications
5.6 – 32 bit DSP Controller Card
This card contains the interfaces to serially communicate
with a host port and auxiliary port, and controls the en-
tire set of cards plugged into the MX2000 system
.
5.6.1 – Auxiliary Serial Port
This port can communicate serially with an external port
as an RS232 or RS485 serial device. The type of device
is jumper selectable (J10) on the board and the factory
setting is RS485. The serial protocol for this port can be
modified by the SETCOM command. The default setting
is 9600 baud, no parity, 8 bit and 1 stop bit. This port is
referred to as Port #2 when used in the user generated
program.
Signal Name Description
GND Signal Ground reference
RX+ Differential receiver non-inverting input.
RX- Differential receiver inverting input or RS232 receiver input.
TX+ Differential transmitter non-inverting output.
TX- Differential transmitter inverting output or RS232 transmitter output.
SHLD Connection to Shield
USER
CONTROL PANEL
RS485
120
TX+
TX+
TX-
TX-
RX+
RX+
RX-
RX-
GNDGND
MX
AUX PORT
RS485
HOST CONTROL PANEL RS485
MX AUX PORT RS485
120
SHLD
1
2
3
4
5
6
MX
AUX PORT
RS232
USER
CONTROL PANEL
RS232
RX
TX
GND
TX-
RX+
GND
1
3
5
NOTE: Please reference your User
Control Panel manual for pinout .
USER CONTROL PANEL RS232
MX AUX PORT RS232
2
RX-
4
6
TX+
SHLD
NOTE: MX Aux Port
Pins 2 & 4 not used
RS485RS232
RS485
Device
RS232
Device
Jumper
IN
OUT
UART
TX+
TX-
Auxiliary Port Equivalent Circuit
SHLD
20K
+5V
2.2K
RS485
Device
RX-
RX+
GND
2.2K
2.2K
100