GE IC697VAL348 user manual Immediate DAC Update Mode

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4

Immediate DAC Update Mode

The processor unit sends the 16-bit word to be converted to the first register of the selected DAC. If that DAC channel has previously been jumpered to, it will automatically pass the contents of the first DAC register into the second register and update the analog output. There is one jumper that enables/disables all eight DAC channels to be in the IMMEDIATE UPDATE MODE as described above, or in the DELAYED UPDATE MODE. Jumper definition and locations are described in “Program Controlled and External Start Convert Mode” on page 2-9.

GFK-2059

Chapter 4 Theory of Operation

4-3

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Contents GE Fanuc Automation As Used in this Publication CimstarContents Introduction, Description, and Specifications Reference Material and Other GE Fanuc ManualsGeneral Description Functional Description Safety Summary Ground the SystemConfiguration and Installation Physical Installation Do not install or remove boards while power is appliedConfiguration Jumper Function Preset ConditionBefore Applying Power Checklist Digital-to-Analog Converter Board InstallationBoard Address Selection Switches Read this Direction OFF, Open = ON, Closed =Address Modifier Address Modifier Response Selection Digital Code Selection JA Offset Binary TWO’S Complement CodeProgram Controlled and External Start Convert Mode Connector Descriptions Rear View of Board PC Board Row B Signal Mnemonic P2 ConnectorPin Number Row a Signal Mnemonic Row C Signal MnemonicPC Board P3 Connector Row B Signal Mnemonic Row CDigital-to-Analog Converter Board Calibration Table P3 ConnectorDAC Zero Offset and Gain Calibration Channel Offest PotSide Programming DAC Channels 0 to 7 Address Write Only 1Control and Status RegisterDAC Channels Address Map D15 MSB D00 LSBImmediate DAC Update Mode Digital-to-Analog Converter Board Programming OptionsControl Register Data Format and Definitions D09 D08 Delayed DAC Update Mode Test Mode Programming Program Example Delayed DAC Update Mode END Control Word D15 to D0 Hex Value Analog Output Control in Immediate DAC Update ModeAnalog Out Pathway DAC Programming Sequence Delayed DAC Update Mode Analog Output Control in Delayed DAC Update Mode Theory of Operation Operational Overview Immediate DAC Update Mode Program Control Update Mode Digital-to-Analog Converter Board Functional Block Diagram VMEbus Interface Description A01 A02 A03 A04 VMEbus Interface Logic and Interface Signals DIG GND Maintenance
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