OBCB Introduction

The OnBoard Counter B (normally abbreviated to "OBCB") is an intrinsic Firmware function that is implemented on a number of SPLat controller boards. OBCB differs from OBCA in that OBCB:

• Supports 8 or more inputs
• Is lower speed, up to about 2kHz max

This guide covers the aspects of the OBCB that are common to all implementations.

The OBCB is a feature of the controller's operating firmware introduced in dialect 19.

You should also read the OBCB specific material in the documentation for the specific controller (board) you are using.

The OBCB provides medium speed counting so can be used for event counting (e.g. counting bottles on a conveyor) or for frequency measurement (e.g. engine rpm).

See Also

• OnBoard Counter A for a higher speed counting feature
• OnBoard Quadrature Counter for direction sensitive counting.