Nematron Pointe Controller - Manual (Page 275)

Pointe Controller User Guide Appendix A: OptiLogic Technical Specifications
273
A.11 OL2304 Analog Voltage Output Module
The OL2304 Analog Voltage Output Module provides four (4) output channels
that are range configurable, on a channel by channel basis, to any of four
common output ranges: 0-5 V, 0-10 V, +/-5 V, or +/-10 V. The voltage range for
each channel can be configured through your PointeControl project rather than
using physical jumpers. The module generates its own isolated output power
supply, eliminating any need for an outside source.
To control the voltage output, the module receives an output value from the
program and converts it to an actual voltage. The output value has a 12-bit
resolution and is scaled from 0 to 4095 (0x0 to 0xFFF); i.e., the minimum voltage is
equal to 0, the maximum voltage is equal to 4095, and all other voltages are
scaled in between.
To find the correct output value for a given voltage, you must configure a Flow
Chart block or Ladder Diagram rung to perform the following calculations:
For a range of 0-5 V…
Output Value = ( Actual Voltage x 4095 ) / 5
For a range of 0-10 V…
Output Value = ( Actual Voltage x 4095 ) / 10
For a range of +/-5 V…
Output Value = [ ( Actual Voltage + 5 ) / 10 ] x 4095
For a range of +/-10 V…
Output Value = [ ( Actual Voltage + 10 ) / 20 ] x 4095
Example 1: A channel is configured for a range of 0-10 V and a 3.3V output is
required. The output value is calculated as…
Output Value = ( 3.3 x 4095 ) / 10 = 1351
Example 2: A channel is configured for a range of +/-5 V and a –2.5V output is
required. The output value is calculated as…
Output Value = [ ( -2.5 + 5 ) / 10 ] x 4095 = 1024
Technical Specifications
Card Cage Power Required 700 mA
Ouptuts 4
Output Ranges 0-5V, 0-10V, +/-5V, +/-10V (configurable by channel)
Resolution 12 bit (1 in 4096)
Output Type Single-ended, 1 common