The SNAP-PAC-SB2 brain is an I/O and communications processor for your SNAP PAC System. Designed primarily to work in distributed systems controlled by a SNAP PAC S-series controller, the SNAP-PAC-SB2 provides local intelligence that frees the controller for supervisory tasks.
As an I/O processor, the SNAP PAC brain independently handles functions such as latching, counting, thermocouple linearization, watchdog timers, and PID loop control. These functions continue to work on the brain even if communication with the SNAP PAC controller is lost.
The SNAP-PAC-SB2 brain supports all the SNAP I/O analog and digital input and output modules available on the Opto 22 website. These modules can all be mixed on the same mounting rack and placed in any position on the rack. The brain and modules mount on a SNAP PAC rack, which holds up to 4, 8, 12, or 16 modules.
In addition to I/O processing, the SNAP-PAC-SB1 brain communicates over an RS-485 serial network (2-wire or 4-wire), and multiple SB-series brains can be installed in a multi-drop (daisy-chain) configuration.
The SNAP-PAC-SB2 brain does not offer high-speed digital functions; if you need high-speed counting (up to 20 KHz), quadrature counting, pulse measurement, and frequency and period measurement, choose the SNAP-PAC-SB1 brain instead. For a complete list of features and specifications, see form #1689, the SNAP PAC Brains Data Sheet, under the Docs & Downloads tab.
See a comparison chart for SNAP PAC controllers and brains.
Build your system in the SNAP I/O Configurator.
