The B883-200 thermocouple input module is a smart I/O module that multiplexes up to ten thermocouples into three consecutive input registers of the control system.

Each B883-200 module provides reference junction temperature compensation, open circuit detection, and linearization for ten thermocouples. Also built-in are self-calibration, internal diagnostics, and 800-series bus diagnostics.

Any mix of type B, E, J, K, R, S, T or N thermocouple operations or simple −20 to +80 mV input operations may be set by the user under program control.

For the thermocouple inputs, the PLC can access individual temperature readings in degrees Centigrade, Fahrenheit or in compensated millivolts. Each time the PLC scans the B883-200 module, it receives the specified temperature or millivolt reading along with open-circuit and module health data. The thermocouple wire is terminated on a special isothermal connector assembly on the housing. Each B883-200 module uses three consecutive input registers and three output registers.