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SNAP PAC Brains
The SNAP-PAC-EB1, SNAP-PAC-EB2, SNAP-PAC-SB1, & SNAP-PAC-SB2 brains are I/O and communications processors for your SNAP PAC System. The SNAP-PAC-SB1 & SNAP-PAC-SB2 are designed specifically for distributed systems controlled by a SNAP PAC S-Series controller, while the the SNAP-PAC-EB1 & SNAP-PAC-EB1 are designed to work in a SNAP PAC S-series or R-series controller, all SNAP PAC brains provide 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-EB1, SNAP-PAC-EB2, SNAP-PAC-SB1, & SNAP-PAC-SB2 brains support all the SNAP I/O analog, digital, serial, and special-purpose 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 brain communicates over a standard 10/100 Mbps Ethernet network. The brain is equipped with two switched Ethernet network interfaces. Because these interfaces share a single IP address and act just like an Ethernet switch, SNAP PAC brains can be installed in a multi-drop (daisy-chain) configuration, extending the control network without the added expense of additional Ethernet network hardware.
The SNAP-PAC-SB1 & SNAP-PAC-SB2 brains communicate 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. SNAP PAC brains can also be installed in a star configuration using standard, off-the-shelf Ethernet network components.
The SNAP-PAC-EB1 & SNAP-PAC-EB2 brains support communication using multiple protocols running simultaneously over Ethernet. Most customers use the PAC Project software suite for control, monitoring, and data acquisition. At the same time, you can communicate using other methods, including Modbus/TCP, SNMP, SMTP, FTP, and OptoMMP. Communication with OPC 2.0-compliant clients is available through OptoOPCServer.
The SNAP-PAC-EB1 brain offers high-speed digital functions, including high-speed counting (up to 20 KHz), quadrature counting, pulse generation and measurement, and TPO (time-proportional output). If you do not need high-speed digital functions, choose the SNAP-PAC-EB2 brain instead.
The SNAP-PAC-SB1 brain offers high-speed digital functions, including high-speed counting (up to 20 KHz), quadrature counting, pulse generation and measurement, and TPO (time-proportional output). If you do not need high-speed digital functions, choose the SNAP-PAC-SB2 brain instead.
 SNAP PAC Brains Catalog PDF
Contact an ACS Representative for more information.
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