Now developer and IoT ready with a built-in HTTP/HTTPS server and RESTful API. See Programming below.
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 compatible with
groov EPIC. You can control
groov EPIC I/O units with a SNAP PAC S-series controller running
PAC Control R10.a or higher. The SNAP-PAC-S2 is fully integrated with PAC Project software, SNAP PAC I/O processors, 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.
Programming
The SNAP-PAC-S2 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 PAC, where it runs independently.
REST API
All I/O point and strategy variable data is available for secure access using the built-in HTTPS server and RESTful API, with data delivered in JSON format. For complete API documentation and steps for getting started, see
developer.opto22.com. In addition, two Node-RED nodes are available. Note that minimum
firmware R9.5a and
PAC Project R9.5a are required to use the REST API.
You can build full-featured operator interfaces (HMIs) using the included
PAC Display software, which taps the same tagname database you already developed in PAC Control. SNAP PAC S-series controllers are also compatible with Opto 22's
groov products and
groov View HMI tool.
Networking
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 network links.
NOTE: Support for controller redundancy has been restricted to SNAP PAC S-series controllers running firmware version R10.4e or lower using PAC Control versions R9.0 to R10.6. You are no longer able to create new strategies containing controller redundancy. You can continue to maintain existing strategies that have controller redundancy; however, those controllers must use firmware version R10.4e or lower.
Serial Devices
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. (Note: If you are using the S2 with
mistic I/O units, use the legacy user's guides versions of PAC Control
(form 1710), PAC Display
(form 1712), and PAC Manager
(form 1714).
If you need fewer serial ports, see the
SNAP-PAC-S1.
To compare controller features, see the
SNAP PAC Controller and Brain Comparison Chart.
Mounting
The SNAP-PAC-S2 can be panel or DIN-rail mounted. For DIN rail, see the
SNAP-S2DIN DIN-rail mounting kit.
Need More Information?
See the
Specifications tab and the
SNAP PAC S-series Controllers Data Sheet (form 1584).
Opto 22's SNAP PAC System includes real-time industrial controllers and I/O, built on open standards and field-proven worldwide since 2007. SNAP PAC products are reliable for OEMs, industrial automation, process control, and remote monitoring applications. Fully compatible with newer groov EPIC systems; free product support.