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WiFi
An integral WiFi adapter provides wireless connectivity using the IEEE
802.11b/g/n standard, and provides an RP-SMA coax antenna connector.
The WiFi configuration switch sets operation as follows:
•
OFF – (Default, middle) WiFi adapter is disabled.
•
ACC – The EC-BOS-8 UUKL provides operation as a WiFi access
point for up to 20 clients.
•
CLT – The EC-BOS-8 UUKL operates as a client to an existing
802.11b/g/n router or access point.
Refer to the document EC-Net 4 EC-BOS WiFi Operation - Engineering
Notes for details on WiFi configuration and factory-default IP settings.
RS485 wiring
On the EC-BOS-8 UUKL top side, two RS485 ports operate as COM1
and COM2. Each port is capable of up to 115,200 baud, and uses a 3-
position, screw terminal connector.
Figure 7: RS-485 Wiring Example.
1
RS485 port B (COM2) supporting a network of other field
devices using RS485 communications.
2
RS485 devices on the same network should use the same
protocol and baud rate. Up to 32 or more devices may be
supported, depending on device specifications.
Use shielded, twisted-pair, 18-22 AWG cabling to wire in a continuous
multidrop fashion to other RS485 devices: "minus to minus", "plus to plus,"
and "shield to shield."
Connect the shield wire to earth ground at one end only, for example at
the EC-BOS-8 UUKL.
Figure 7: RS-485 Wiring Example
wiring.
RS485 Bias Switches
Each RS485 port has an adjacent 3-position biasing switch, with these
settings:
•
BIA - (Default, middle) RS485 biasing and termination: 2.7K Ohm bias
resistors with no termination resistor
•
END - RS485 biasing and a termination: 562 Ohm bias resistors and
150 Ohm termination resistor
•
MID - RS485 biasing or termination: 47.5K bias resistors with no
termination resistor
Often, adding RS-485 biasing can improve communications by eliminating
indeterminate idle states.
•
BIA - (Default, middle) Often best if the RS485 trunk needs biasing,
but when the EC-BOS-8 UUKL is not installed at the end of the trunk.
•
END - Often best if the EC-BOS-8 UUKL is installed at the end of an
RS485 trunk of devices that is not already biased.
•
MID - Often best if the EC-BOS-8 UUKL is put in the middle of an
already-biased RS485 trunk.
If desired, you can change the position of an RS485 port's bias switch while
the EC-BOS-8 UUKL is running.
Each RS485 port has two LEDs. See
Ethernet Wiring
Two RJ-45 10/100-Mbit Ethernet connectors are labeled PRI (LAN1) for
primary, and SEC (LAN2) for secondary. Use a standard Ethernet patch
cable to an Ethernet switch.
The factory-default IP address for PRI is 192.168.1.140. The subnet
mask is 255.255.255.0. By default, the SEC (LAN2) port is disabled.
Refer to the EC-BOS-8 UUKL EC-Net 4 Install and Startup Guide for
details on the software configuration of the Ethernet ports.
Power Up and Initial Checkout
Prerequiste: Ensure power and ground wiring to the EC-BOS-8 UUKL is
ready—see wiring
page 6 for the location of status LEDs.
1. Apply power. To do this, do one of the following:
-
Insert the 2-position 24V power connector plug, or
-
Insert the barrel plug of the wall-mount AC adapter (WPM-8000).
2. Check the STAT (Status) and BEAT (Heartbeat) LEDs. When
power is applied, after 3-10 sec, the green "STAT" LED illuminates,
indicating that the system is OK, with power applied. During
bootup, the "BEAT" LED may blink at 1 Hz with a 90%/10% on/off
duty cycle, or in some other irregular pattern. When bootup
completes, the normal 1 Hz "BEAT" LED flash at 50%/50% on/off
shows example
duty cycle returns.
If after applying power, the "STAT" LED goes out, or if the "BEAT"
LED comes on (steady) and stays lit over 2 minutes, contact
Systems Engineering for technical assistance. See the section
"Status
For more details in this mounting and wiring document, see:
•
"Status
•
"USB Ports and Pushbutton
Status LEDs
The EC-BOS-8 UUKL provides a number of status LEDs, with all but one
visible with the front access door closed. See
"RS485
The EC-BOS-8 UUKL is not compatible with a
Power-Over-Ethernet (POE) network. Connecting the EC-
BOS on a network segment which carries power may cause
the unit to fail. In that event, you must disconnect it from the
POE network segment and power-cycle the unit.
Often, you only use PRI (LAN1 primary), unless you have a
specific application for the other port. For example, isolating
a driver's network traffic, using SEC (LAN2). Do not use
SEC as the primary port.
If enabling SEC, note that PRI and SEC must be connected
to different IP subnets. Further, an EC-BOS does not
provide IP routing or bridging operation between the two
Ethernet ports.
"Earth Ground and
Power" on page 4. See
LEDs" on page 6, especially
LEDs," page 6
Switches," page 7
LEDs,"
page 5.
Figure 8
on
"BEAT (Heartbeat)
LED".
Figure
8.
5/10
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