Voltage
For the B1 and S1 models, set the Modbus register value to 0 for a switched power supply at 5 volts. Se the
Modbus register value to 1 for a switched power supply at 16 volts.
For the B2 and S2 models, set one of the following register values to select your switched power output voltage.
For 5 V, set the Modbus register to 204.
For 7 V, set the Modbus register to 125.
For 10 V, set the Modbus register to 69.
For 15 V, set the Modbus register to 32.
For 20 V, set the Modbus register to 12.
For 24 V, set the Modbus register to 3.
When associating a switched power supply to an input, set the Switch Power Output Enable register to off (0). Set
Modbus register 2201 for switched power 1 and Modbus register 2251 for switched power 2. This allows the input sampling
mechanism to control the output.
Use the following configuration parameters to define the switch power associated with an input.
Input Parameter
Universal Input Configuration Parameter Modbus Registers
Universal Input 1
Universal Input 2
Universal Input 3
Universal Input 4
Input Enable
1001
1051
1101
1151
Sample Interval (high)
1002
1052
1102
1152
Sample Interval (low)
1003
1053
1103
1153
Switched Power Enable
Mask
1004
1054
1104
1154
Switched Power Warmup
1005
1055
1105
1155
Switched Power Voltage
1006
1056
1106
1156
Extended Input Read
1007
1057
1107
1157
Input Out-of-Sync Enable
1008
1058
1108
1158
Extended Input Read
The Extended Input Read is a bit field parameter that allows multiple inputs to be sampled with the same switch
power parameters.
If the bit field is set to 0x000F, the first four inputs are sampled after the switch power parameters are satisfied.
If the Extended Input Read parameter is set in the Universal input 1 configuration registers, set Universal inputs 2
through 4 Extended Input Read and Sample Interval parameters to zero.
Input Enable
Set to 1 to enable the input. Set to 0 to disable the input.
Out-of-Sync Enable
To enable the input to continue operating when the device is out of sync with the master radio, set to 1.
To disable the input when the device is not synchronized to the master radio, set to 0.
Sample Interval (high), Sample Interval (low)
The sample interval (rate) is a 32-bit value (requires two Modbus registers) that represents how often the I/O
board samples the input.
The register value is the number of time units. One time unit is equal to 0.01 seconds.
For example, a Modbus register value of 1000 represents a sample interval of 10 seconds (1000 × 0.010 seconds
= 10 seconds).
Switch Power Enable Mask
The Switch Power Enable Mask works with the warm-up and voltage parameters to define the switch power
output. The bit mask can select any number of switch powers.
0x0 - No switch power enabled
0x1 - Enable Switch Power 1
0x2 - Enable Switch Power 2
0x3 - Enable Switch Power 1 and Switch Power 2
DXM100-Bx Wireless Controller Instruction Manual
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