SNAP-PAC-S1-W OPTO 22, SNAP-PAC-S1-W Datasheet - Page 2

• Manufacturer Part Number: SNAP-PAC-S1-W
• Description: Programmable Controller Wireless
• Manufacturer: OPTO 22

Specifications of SNAP-PAC-S1-W

• Accessory Type: Programmable Automation Communication
• Signal Input Type: Ethernet, RS-232
• Rohs Compliant: Yes
• For Use With: SNAP PAC System
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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network interface as well, so each PAC has a total of
three separate IP addresses—two wired and one
wireless. Wired+Wireless PACs 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.
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. Control
programs run the same on both networks
without reprogramming.
A Wired+Wireless S-series PAC can communicate with both
wired and wireless SNAP PAC I/O units. (See
Supported” on page 3
segment a wireless network from a wired one.
Serial Communication
SNAP PAC S-series controllers provide RS-232 and RS-485
communication as follows:
The SNAP-PAC-S1 and SNAP-PAC-S1-FM have two RS-232
serial ports that support general-purpose communication
with serial devices; you can send and receive data from one or
two serial devices connected directly to the controller. Port 0
can be connected to a modem using PPP (Point-to-Point
Protocol). These controllers also have one pluggable two-wire
RS-485 port that can be used for SNAP PAC or mistic serial I/O
units. For additional serial interfaces, you can add one or more
SNAP serial communication modules on SNAP PAC racks
connected to the controller.
The SNAP-PAC-S2 has four serial ports that can each be
configured using PAC Manager as either RS-232 or RS-485 (2-
wire or 4-wire). These serial ports can be used for I/O or for
general-purpose serial communication. For the default
configuration settings of these ports, see form 1592, the SNAP
PAC S-series User’ s Guide.
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for details.) If desired, the PAC can
“I/O Units
SNAP PAC S-Series Controllers
Configured as RS-232, the ports support remote serial device
communication, and any one of the ports can be configured
as a PPP modem connection for creating a TCP/IP network
over PSTN (Public Switched Telephone Network) lines.
Configured as RS-485, the serial ports connect to legacy
Opto 22 mistic™ I/O units, including the serial B3000 brain and
Kit. For more information, see the SNAP PAC Redundancy
Option Kit Data Sheet (form 1901) and the SNAP PAC System
Redundancy User’s Guide (form 1831), both available on our
website.
Backward Compatibility
S-series controllers have RS-485 serial interfaces for
connecting to Opto 22’s legacy mistic I/O units. The SNAP-
PAC-S1 and SNAP-PAC-S1-FM have one RS-485 port, and the
SNAP-PAC-S2 can be configured with up to four.
This connectivity with legacy serial-based I/O systems,
combined with PAC Control Professional’s ability to import
control programs (or strategies) written in OptoControl
software, provides a migration path to integrate older Opto 22
I/O systems into modern control hardware running on
Ethernet networks.
For detailed information on updating control strategies and
integrating legacy control hardware into modern systems, see
the FactoryFloor to PAC Project Migration Technical Note
(Opto 22 form 1692).
Software
SNAP PAC controllers use Opto 22’s PAC Project Microsoft
Windows
programming, human-machine-interface (HMI) development,
and OPC and database connectivity. Two versions of PAC
Project are available:
remote mistic bricks, and to SNAP PAC SB-series serial brains.
“Software, ”
For additional serial host interfaces, you can add one
®
requires PAC Professional 9.0 or newer (see
-compatible automation software for control
or more SNAP serial communication modules on
Besides two identical PACs, a redundant system
controller actively runs the control program and
be used to form a redundant system, where one
Two identical SNAP PAC S-series controllers can
the other is ready to take over immediately if
attached SNAP Ethernet-based I/O units.
the first one should fail.
below), and the SNAP PAC Redundancy Option
Controller Redundancy
™
®