OPTO 22 SNAP PAC R SERIES, Руководство пользователя

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INTRODUCTION
SNAP PAC R-Series Controller User’s Guide 2
Ethernet Communication
All SNAP PAC R-series controllers communicate over standard 10/100 Mbps Ethernet networks and can be
attached to an existing network. The controllers can also be used in an independent control network built
with standard, off-the-shelf Ethernet hardware.
SNAP PAC R-series controllers include two 10/100 Mbps Ethernet interfaces for networking to Ethernet hosts
and to other I/O units. These independent Ethernet ports have separate IP addresses that can be used with
PAC Project
™
Professional software to set up redundant network links to safeguard the availability and
reliability of an I/O system, or to segment a control system’s network from the enterprise LAN.
Supported protocols over Ethernet include EtherNet
™
/IP, Modbus
®
/TCP, SMTP, SNMP, FTP, and OptoMMP.
Wired+Wireless Communication
SNAP-PAC-R1-W and SNAP-PAC-R2-W controllers add wireless capability to communications. In addition
to the two wired network interfaces, these models have a wireless network interface as well, so each PAC has a
total of three separate IP addresses—two wired and one wireless. Wired+Wireless PAC can be used wirelessly
or on a wired network, or both at once.
For flexibility in designing your wireless network, wireless communication includes support for 802.11a, b, and
g standards. Wired+Wireless PACs can be used with a variety of wireless switches and other infrastructure
hardware. For the best security, the 802.11i WPA2/AES standard is supported, while older WPA and WEP
security standards are included for backwards compatibility.
Because wireless functionality is in the PAC itself, no additional parts are required within the control system for
wireless use. All SNAP PAC racks and SNAP I/O modules can be used either wired or wirelessly. You can switch
from one network to the other without reconfiguring I/O or changing field wiring.
Just like a laptop computer with a wireless connection, all functionality remains the same whether the
Wired+Wireless PAC is used wirelessly or as part of a wired network. Supported protocols remain the same.
And control programs run the same on both networks without reprogramming.
Serial Communication
SNAP PAC R-series controllers provide an RS-232 serial link to support
Point-to-Point Protocol (PPP) modem connections—for creating
TCP/IP networks over serial or PSTN (Public Switched Telephone Network) lines—as
well as remote serial device communication.
The RS-232 serial interface supports either a modem connection using
PPP or general-purpose communication with serial devices, allowing
you to send and receive data from a serial device connected directly to the controller.
For additional serial interfaces, you can add one or more SNAP serial
communication modules on the rack.
NOTE: The R-series controller does not include an RS-485 port and cannot
be used to control Opto 22 serial I/O processors, such as the SNAP PAC
SB-series brains. Use an S-series controller for serial brains.
I/O Mounting Racks
SNAP PAC R-series controllers must be connected to the appropriate
rack to avoid damage to the controller. Both the SNAP-PAC-R1 and R2
are designed to work with SNAP PAC mounting racks, which are available
with 4, 8, 12, or 16 positions for Opto 22 SNAP I/O modules. Part numbers