This article explains the function of input (B) on the SL VARIO cascade module (CMV).
Function of input (B):
The input (B) on the CMV module is used to adjust the bus impedance in the cascade structure.
When is activation required?
Activation of input (B) is only necessary on a single CMV module within each peripheral unit (PE). Typically, this input is activated on the last CMV module in a serial line or on one of the CMV modules in a star configuration in order to avoid signal reflections and ensure stable data transmission.
Important note:
Incorrect or multiple activation of input (B) within a peripheral unit can lead to faults in data communication. It is therefore essential to observe the installation instructions in the associated hardware documentation.