CONTROLLERS

OPTO 22 PAC Series

SNAP PAC R-series Programmable Automation Controller - On-the-rack - Analog, simple digital, serial

The SNAP-PAC-R1 programmable automation controller provides control, communication, and I/O processing in a compact, rack-mounted package. One of four components of the SNAP PAC System, the SNAP-PAC-R1 is fully integrated with PAC Project software, SNAP PAC brains, and SNAP I/O modules.

Used with the included PAC Project Basic software suite (or PAC Project Professional, purchased separately), the Ethernet-based SNAP-PAC-R1 can handle almost all your industrial control, remote monitoring, and data acquisition needs.

System Architecture
This intelligent, flexible PAC can be used in several ways. The SNAP-PAC-R1 can provide complete cell control on its own rack with I/O modules. It can also control SNAP PAC I/O units at the same time for a larger system. Or the R1 can be used in a more extensive distributed control system as an I/O unit controlled by a SNAP PAC S-series standalone controller.

Networking
Two independent, 10/100 Mbps Ethernet network interfaces are included on each SNAP-PAC-R1. These interfaces have separate IP addresses and can be used to segment the control network from the company network or to provide Ethernet link redundancy in case of link failure or maintenance. In addition, the controller has an RS-232 serial port with hardware handshaking, which can be used for PPP (Point-to-Point Protocol) communication over a modem or for direct connection to serial devices.

Programming and Protocols
The SNAP-PAC-R1 is programmed using the included PAC Control software. PAC Control is a flowchart-based tool for developing control applications, or strategies. You create and debug the strategy on your computer and then download it to the R1, where it runs independently. The controller has 16 MB of RAM and can run up to 16 PAC Control flowcharts at once (many more can be included in the strategy). You can build full-featured operator interfaces (HMIs) using the included PAC Display software, which taps the same tagname database you've already developed in PAC Control.

In addition to control, the SNAP-PAC-R1 provides communication. Because it is based on the Internet Protocol (IP), the SNAP-PAC-R1 can communicate simultaneously using several different protocols, including TCP/IP, PPP, Modbus/TCP, SNMP for network management, SMTP for emailing, and OptoMMP, the open memory-mapped protocol used by all Opto 22 Ethernet-based devices.

I/O Processing
The controller mounts on a SNAP PAC mounting rack with up to 4, 8, 12, or 16 digital, analog, serial, and special-purpose I/O modules. Choose the modules needed for your application from the extensive line of SNAP I/O modules.

	Analog features include thermocouple linearization, minimum/maximum values, offset and gain calibration, scaling, ramping, TPO, output clamping, filter weight, and watchdog timer. The SNAP-PAC-R1 also offers up to 96 PID loops.
	Digital features on 4-channel digital modules include latching, high-speed counting (up to 20 kHz depending on the module), quadrature counting, pulse generation and measurement, TPO, and watchdog timer. Features on high-density digital modules are more limited (see module data sheet for details). SNAP PAC Controller and Brain Comparison Chart.

The SNAP-PAC-R2 programmable automation controller provides control, communication, and I/O processing in a compact, rack-mounted package. One of four components of the SNAP PAC System, the SNAP-PAC-R2 is fully integrated with PAC Project software, SNAP PAC brains, and SNAP I/O modules.

Used with the included PAC Project Basic software suite (or PAC Project Professional, purchased separately), the Ethernet-based SNAP-PAC-R2 can handle almost all your industrial control, remote monitoring, and data acquisition needs.

System Architecture
This intelligent, flexible PAC can be used in several ways. The SNAP-PAC-R2 can provide complete cell control on its own rack with I/O modules. It can also control SNAP PAC I/O units at the same time for a larger system. Or the R2 can be used in a more extensive distributed control system as an I/O unit controlled by a SNAP PAC S-series standalone controller.

Networking
Two independent, 10/100 Mbps Ethernet network interfaces are included on each SNAP-PAC-R2. These interfaces have separate IP addresses and can be used to segment the control network from the company network or to provide Ethernet link redundancy in case of link failure or maintenance. In addition, the controller has an RS-232 serial port with hardware handshaking, which can be used for PPP (Point-to-Point Protocol) communication over a modem or for direct connection to serial devices.

Programming and Protocols
The SNAP-PAC-R2 is programmed using the included PAC Control software. PAC Control is a flowchart-based tool for developing control applications, or strategies. You create and debug the strategy on your computer and then download it to the R2, where it runs independently. The controller has 16 MB of RAM and can run up to 16 PAC Control flowcharts at once (many more can be included in the strategy). You can build full-featured operator interfaces (HMIs) using the included PAC Display software, which taps the same tagname database you've already developed in PAC Control.

In addition to control, the SNAP-PAC-R2 provides communication. Because it is based on the Internet Protocol (IP), the SNAP-PAC-R2 can communicate simultaneously using several different protocols, including TCP/IP, PPP, Modbus/TCP, SNMP for network management, SMTP for emailing, and OptoMMP, the open memory-mapped protocol used by all Opto 22 Ethernet-based devices.

I/O Processing
The controller mounts on a SNAP PAC mounting rack with up to 4, 8, 12, or 16 digital, analog, serial, and special-purpose I/O modules. Choose the modules needed for your application from the extensive line of SNAP I/O modules.

	Analog features include thermocouple linearization, minimum/maximum values, offset and gain calibration, scaling, TPO, output clamping, filter weight, and watchdog timer. The SNAP-PAC-R2 also offers up to 96 PID loops.
	Digital features are simplified on the SNAP-PAC-R2. Digital features include status, latching, and watchdog timer. SNAP PAC Controller and Brain Comparison Chart.

SNAP PAC S-series Programmable Automation Controller for Ethernet Networks

The SNAP-PAC-S1 programmable automation controller provides powerful, real-time control and communications to meet your industrial control, monitoring, and data acquisition needs. One of the four components of the SNAP PAC System, the SNAP-PAC-S1 is fully integrated with PAC Project software, SNAP PAC brains, and SNAP I/O modules to form a complete control system. The SNAP PAC System includes digital and analog control, serial string handling, PID loops, and enterprise connectivity. The controller is compact and industrially hardened. It includes two independent Ethernet network interfaces with separate IP addresses, which can be used to segment the control network from the company network or for redundant Ethernet links. The SNAP-PAC-S1 also has three serial ports: an RS-232 port with full hardware handshaking, ideal for PPP communication using a modem; another RS-232 port for connecting directly to serial devices; and an RS-485 port for connecting to SNAP PAC Serial brains or to legacy mistic I/O units. SNAP PAC Controller and Brain Comparison Chart. Click here for product datasheets	The SNAP-PAC-S2 programmable automation controller provides powerful, real-time control and communications to meet your industrial control, monitoring, and data acquisition needs. Part of Opto 22's S-series family of industrial controllers, the SNAP-PAC-S2 is fully integrated with PAC Project software, SNAP PAC brains, and SNAP I/O modules to form a complete control system. The SNAP PAC System includes digital and analog control, serial string handling, PID loops, and enterprise connectivity. The controller is compact and industrially hardened. It includes two independent Ethernet network interfaces with separate IP addresses, which can be used to segment the control network from the company network or for redundant Ethernet links. The SNAP-PAC-S2 controller is well suited for use with serial-based I/O units and serial devices. The SNAP-PAC-S2 has four serial ports that can be individually configured as either RS-232 or RS-485 (2-wire or 4-wire). Configured as RS-232, serial ports support serial device communication or a Point-to-Point Protocol (PPP) modem connection for creating a TCP/IP network over PSTN (Public Switched Telephone Network) lines. Configured as RS-485, serial ports connect to SNAP PAC Serial brains or to legacy Opto 22 mistic™ I/O units, including the serial B3000 brain and remote mistic bricks.