Configuring Analog Input Channels for the BMEAHI0812
Original instructions
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Analog Input Channels
The BMEAHI0812 HART analog input module includes 8 input channels. To open the module for configuration in Control Expert, double-click the input module in the PLC Bus:
Channel Parameters
To configure an input channel, select that channel on the left side of the configuration dialog. You can edit the following parameters for each of the 8 channels:
Parameter
Description
Used
The status of the channel:
  • Selected = enabled (default)
  • De-selected = disabled
Symbol
(Read only) Displays the variable that has been associated with this channel.
Range
(Read only) Displays the current loop range of 4...20 mA.
Scale
Click in this field to open the following dialog where you can input the following scaling and overflow parameters:
Scaling: 0%:
Input the percentage scaling value for 4 mA current (default = 0).
Scaling: 100%:
Input the percentage scaling value for 20 mA current (default = 10,000).
Overflow: Below
The threshold between the lower tolerance area and the underflow area (default = –800).
Overflow: Below (checkbox)
The status of underflow control:
  • Selected = enabled (default)
  • De-selected = disabled
Overflow: Above
The threshold between the upper tolerance area and the overflow area (default = 10,800).
Overflow: Above (checkbox)
The status of overflow control:
  • Selected = enabled (default)
  • De-selected = disabled
Filter
The Required Value used to perform first order filtering of the analog signal. Values include:
  • 0: no filtering
  • 1, 2: low filtering
  • 3, 4: medium filtering
  • 5, 6: high filtering