Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 122
When configuring the AI Combo block in GAP, set Conf. input field to
2 for all 4-20 mA inputs when used with the Dataforth current input
plug-in module. This will allow the block to use the module factory
voltage calibration values with a gain factor for a 200 ohm external
resistor on the Dataforth FTM.
For modules with GAP selectable inputs, when changing the Conf.
input field to a new value an application save and application
restart is required before the module can be used. This save and
restart allows the hardware and software to be properly initialized
together.
Figure 9-13. Analog Input Wiring for a 24/8 Analog FTM
Analog Outputs
There are four analog output channels of 4–20 mA with a full scale range of 0-25 mA. All Analog Outputs
can drive a maximum load of 600 ohms (load + wire resistance). See Figure 9-76 for analog output
connection. Each output monitors the output source and return current for fault detection. All of the analog
outputs may be individually disabled. When a channel fault or a module fault is detected, the application
program may annunciate the fault, disable the channel, and stop using data in system calculations or
control. Care should be taken to prevent ground loops and other faults when interfacing to non-isolated
devices. See Chapter 13 for complete field wiring information for the Analog High Density FTM.
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