The IS230TCISH6C defines local buses and connections to their adjacent left and right peripheral slots. There are 13 local buses on each of the left or right side, and this bus allows the transmission of analogue signals in addition to digital signals. For example, peripheral slot #3 has a left local bus that can be connected to the right local bus on peripheral slot #2, while the right local bus on peripheral slot #3 is connected to the left bus on peripheral slot #4.

The left-side local bus on peripheral slot #3 of the IS230TCISH6C and the right-side local bus are not connected to each other on the backplane unless the instrument module plugged into peripheral slot #3 connects these two signals. There are 13 left or right local buses, which allow the transmission of analogue signals in addition to digital signals.

The IS230TCISH6C peripheral slot has a left local bus that can be connected to the right local bus on peripheral slot No. 2, while the right local bus on peripheral slot No. 3 is connected to the left bus on peripheral slot No. 4. In contrast, the left local bus on peripheral slot #3 and the right local bus are not connected to each other on the backplane unless the instrument module plugged into peripheral slot #3 connects these two signals.