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13-1
ANALOG OUTPUT MODULE
General Description
The Analog Output (AO) modules have four optically-isolated analog output channels for
controlling user devices (see Figure 13-1). Each channel has two possible outputs: 0-20 mA
Interface industry standard current output and 0-10 V Interface industry standard voltage
output. Only one of the outputs can be enabled in a particular channel - either current or
voltage.
The module’s digital to analog converter resolution is 14 bit. The Analog Output channels are
optically isolated from the module internal logic circuits. The modules are fully calibrated and
can be tested and recalibrated in the field.
Each analog output has three status LEDs, Vout, Iout, and CAL which represent the calibration
status of each output for voltage/current. See Module Status and Diagnostics below for the
LEDs behavior.
For a description of I/O module construction, location, LEDs, TBs, and other common I/O
module features, see the I/O Modules chapter above.
For details on specific AO parameters and configuration, see AO Module Configuration
below.