The B883-001 high speed counter module consists of two separate and independent counters and associated logic, and controls up to three outputs. After being configured, the module can operate independently of the PC and react to external events faster than the PC scan time. The module counters have the following characteristic:

Counter #1 has bi-directional (up/down) count capability and has two inputs, two set points, a programmable maximum count, and two outputs. Counter 1 will also accept input from a quadrature type device such as an encoder.

Counter #2 is an up counter and has one input, a programmable maximum count, and one output.

Both counters accept pulsed inputs of 0 to 5, 0 to 12, or 0 to 24 Vdc at frequencies up to 50 KHz. the B883 options are selected by commands from the PC and by terminal wiring.

Counter #1 has three modes of operation. Counter #2 can accept input either from an external source or from one of two internal clocks. Both counters can be configured to operate in a wide variety of applications (refer to the section on programming the B883)