Redundant configuration: Install 2 modules in adjacent slots (odd even slots), supporting dual redundant configuration
Model code and ordering
(1) Encoding rules (universal structure)
Encoding type meaning optional values
Main model module type identification ASI133 (analog input), ASI533 (analog output), AST143 (TC/mV input), etc
Suffix code 1 Function type - S (standard type), - H (with HART communication)
The suffix code 2/3 has a fixed code of 0
Option code terminal types/SA3S0 (analog input standard terminal),/SA3D0 (analog input redundant terminal), etc. (distinguished by module type)
(2) Ordering requirements
It is necessary to clearly specify the main model+suffix code+option code, for example: Analog input module with HART communication and standard terminals: ASI133-H00/SA3S0

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