Applies To:
  • CitectSCADA 3.x, 4.x, 5.x

Question: I will get a hardware alarm when using the ADAM 4000 series analog input module to read address "AR" or "AI".  

This problem is caused by ADAM configuration. There are three data formats for analog input.

A. Engineering Units, address "AR"

B. FSR formats, address "AR"

C. Two complement hexadecimals ,address "AI".

When ADAM module is running , it uses one of the formats. In another words, the variable "AR" and "AI" do not exist at the same time. So you should use the ADAM utility program to setup ADAM modules first. If the module configuration is in Engineering Units or Percent of FSR formats, use 'AR' to read data, where 'AR' is real. If the module configuration is twos complement hexadecimal format, use 'AI' to read data, where 'AI' is integer.