Analog Input Channels

The BMEAHI0812(H) 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