4.1.1 DIP Switches for the I/O Board
The DXM150-Sx Wireless Modbus Slave I/O board DIP switches are set from the factory to Modbus Slave ID 11. For more
information, refer to
Setting the Modbus Slave ID on the I/O Base Board
.
4.1.2 I/O Board Jumpers
Hardware jumpers on the DXM I/O board allow the user to select alternative pin operations. Turn the power off to the device
before changing jumper positions.
Jumper
Function
Positions
E
Courtesy power output
Jumper 2 is the power jumper for pin 45. Jumper 1 is the power jumper for pin 35.
•
The pin 45 jumper selects 2.7 V when in the "a" position and 12 V battery in the
"b" position.
•
The pin 35 jumper selects 4.2 V when in the "a" position and device power on
pin 2 in the "b" position.
G1
RS-485 Modbus Slave or
RS-232 Flow Control
Defines the operation of pins 11 and 12. Set the jumpers to use pins 11 and 12 as a
secondary Modbus RS-485 slave port or flow control pins for the RS-232 port. Both
jumpers must be set to the same operation, RS-485 Modbus Slave or Flow control.
The default setting is RS-485.
G2
Generic RS-232 Serial Port or
CAN Serial Port
Defines the operation of pins 9 and 10. Set the jumpers to use pins 9 and 10 as a CAN
serial port or a generic RS-232 serial port. Both jumpers must be set to the same
operation, CAN or RS232.
The default setting is CAN serial port.
G3
Analog output characteristics
for AO2 (pin 32) and AO1 (pin
33)
Defines current (0–20 mA) or voltage (0–10 V) for analog output 1 and 2.
By default, current (0–20 mA) is selected using jumpers 1 and 2 and registers 4008 and
4028 contain a value of 2.
To select voltage (0–10 V) for output Aout1, set jumper 1 in the voltage position (V) and
set Modbus register 4008 on the I/O board (SID 200) to 3.
To select voltage (0–10 V) for output Aout2, set jumper 2 in the voltage position (V) and
set Modbus register 4028 on the I/O board (SID 200) to 3.
4.2 Applying Power to the
DXM150-Sx Wireless Modbus Slave
Apply power to the DXM150-Sx Wireless Modbus Slave using either 12 to 30 V dc or a 12 V dc solar panel and 12 V sealed
lead acid battery.
Pin
Description
Pin 1
No connection
Pin 2
12 to 30 V dc input (+) or solar panel connection (+)
Pins 3, 5, 8, 13, 18, 31, 34,
36, 41, 44, 48
Main logic ground for the DXM150-Sx Wireless Modbus Slave
Pin 4
Solar or backup battery positive input. Battery voltage must be less than 15 V dc. Use only a sealed lead acid (SLA)
battery.
Pin 35, Pin 45
These outputs are controlled by hardware jumpers.
Jumper 2 is the power jumper for pin 45. Jumper 1 is the power jumper for pin 35. Refer to the wiring board for more
information.
•
The pin 45 jumper selects 2.7 V when in the "a" position and 12 V battery in the "b" position.
•
The pin 35 jumper selects 4.2 V when in the "a" position and device power on pin 2 in the "b" position.
4.2.1 Supplying Power from a Solar Panel
To power the DXM150-Sx Wireless Modbus Slave from a 12 V dc solar panel, connect the solar panel to power pins 2(+)
and 3(-). Connect a 12 V dc sealed lead acid (SLA) rechargeable battery to pins 4(+) and 5(-).
The factory default setting for the battery charging algorithm assumes you are using 12 to 30 V dc power to recharge the
battery. If the incoming power is from a solar panel, you must change the charging algorithm.
DXM150-Sx Wireless Modbus Slave
10
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