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Goals and Symptoms
Why does the Input count range for the ADU205 Compact I/O module change after converting from
a Compact 984-A145 PLC to a Compact 984-E275 PLC.
Facts and Changes
The input count range for the ADU205 Compact IO module is defined as 2049-6143 for an input range of
-20mA to +20mA. When the PLC type is changed to 984-E275, the input count range is changed and the
module input irange s no longer valid for the application.
Causes and Fixes
According to the 'Modicon A120 Seris I/O Modules User Guide', this is a normal behavior for the module.
The problem is due to the different input resolution used for the 984-E2xx Compact PLC.
To resolve the problem: