FBM01 P0400DA Foxboro FBM Series DCS Part 0-20 mA Input The 0 to 20 mA Input Interface contains eight 20 mA dc analog input channels. Each channel accepts a 2-wire, analog sensor input such as a 4 to 20 mA transmitter or a self-powered 20 mA source. The module performs the signal conversion required to interface the electrical input signals from the field sensors to the redundant Fieldbus. The module is a main type, and independently connects to the redundant Fieldbus. This module executes the analog Input application program. The configurable options for this program are Analog Input Resolution (on a per module basis), Fieldbus Switching Enable, and Fieldbus Switching Time.