Multiple serial Ethernet communication ports add flexibility for control system architectures
Opto 22, a developer and manufacturer of hardware and software for industrial automation, remote monitoring, and data acquisition projects, has released the SNAP-PAC-S2, a standalone, multiserial port, dual Ethernet interface programmable automation controller (PAC) and the newest addition to the company's SNAP-PAC System.
The industrially hardened, compact SNAP-PAC-S2 is equipped with four serial ports, each of which is fully configurable for either RS232 or RS485 serial communication, making it ideal for connecting to machines, instrumentation devices and (input/output) I/O subsystems. Other equipment with serial interfaces such as weigh scales, vibration monitors, RFID and barcode readers, display terminals, and printers are also supported. Communication over leased lines, radios and cellular networks via the RS232 point-to-point protocol (PPP) modem provided.
The SNAP-PAC-S2 is ideal for Opto 22 upgrades
In addition to its four configurable serial ports, the SNAP-PAC-S2 also features two 10/100 Mbps Ethernet interfaces for host and I/O communication over Ethernet networks. These two independent interfaces can be used to create dual Ethernet networks for segmenting I/O and host traffic, or to design redundant Ethernet links for critical applications.
"The six communications ports built into the SNAP-PAC-S2 make it ideal for today's hybrid applications, where serial networking and communications must be combined with digital and analog signal processing, PID loop control, data acquisition, motion control, and other functions," says Opto 22 CEO Mark Engman.
Well-suited for deployment in any Opto 22 distributed control system architecture, this new SNAP-PAC-S-series controller is also ideal for existing Opto 22 customers seeking to upgrade older, serial-based Opto 22 control systems that utilise outdated technology.
Other SNAP-PAC-S2 features include a 32-bit multitasking processor with floating point unit, 32 MB of RAM, 16 MB of flash memory, and 8 MB of battery-backed RAM. The controller supports multiple communication protocols, including TCP/IP, SNMP, FTP, Modbus/TCP and OptoMMP. Free developer toolkits add support for Data Highway, Modbus ASCII, and Modbus RTU. The controller is capable of multitasking up to 32 PAC Control flowcharts simultaneously.
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