CHAPTER 2: QUICK START
SNAP PAC S-Series User’s Guide
17
17
a.
With the power supply off or unplugged, connect the
+
(positive) lead from the power
supply (normally red) to the
+
(positive) terminal on the face of the controller.
b.
Connect the COM wire from the power supply (normally black) to the
–
(negative) terminal
on the face of the controller.
c.
Connect a lead from a known earth/chassis ground to the
(ground) terminal on the face
of the controller.
IMPORTANT:
Do not turn on power to the controller.
5.
Using Category 5 or superior solid unshielded twisted-pair cable, connect the SNAP PAC
S-series controller using Ethernet port ENET 1 in one of the following ways:
– (Recommended for initial configuration) Connect to a PC directly, using an Ethernet
crossover cable.
NOTE: If you use a crossover cable, make sure to assign a fixed IP address to the network card (NIC)on
your computer. Otherwise, if your network card is configured to get its IP address via DHCP, when you
unplug the computer from the network, the computer will no longer have an IP address. When you
are finished using the crossover cable, you can change the setting back to DHCP.
NOTE: Wired+Wireless models must be initially configured using a wired interface. After you’ve
assigned IP addresses and configured wireless communication parameters, you can communicate
with the PAC on the wireless LAN.
– Connect to a standard 10BASE-T or 100BASE-TX Ethernet network that has a PC on the
same subnet as the controller and does NOT have a Dynamic Host Configuration Protocol
(DHCP) server.
NOTE: When connecting the contoller to a managed switch, make sure the managed switch's port
configuration is set to Auto for the Duplex setting and Auto for the Speed setting.
Maximum cable or segment length is 100 meters; minimum cable length is one meter.
6.
If the controller will connect to I/O units on an RS-485 serial network, connect the serial cable
following the instructions in
“RS-232 and RS-485 Serial Networking”
below.
IMPORTANT:
Do not turn on power to the controller.
7.
Before
turning on power to the controller, follow steps in Opto 22 form 1704, the
PAC Manager
User’s Guide
, to assign the controller an IP address.
This guide is in Adobe Acrobat PDF format on the CD that came with the controller and is also
available from our website, www.opto22.com. Note that you can use PAC Manager to assign IP
addresses to the controller and I/O units at the same time.
