B&B Electronics ESR902W User Manual
Vlinx ESR90xW Hardware
Documentation Number: ESR90xW-4905m
Chapter 2
11
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
Connectors
Configuration Port Connector
One standard RJ-45 receptacle that allows the serial server to be connected to
personal computer for programming, troubleshooting and device
configuration. A standard straight-through RJ-45 (male) Ethernet cable can
be used for this purpose. (This port is not intended to connect directly to an
Ethernet network.)
personal computer for programming, troubleshooting and device
configuration. A standard straight-through RJ-45 (male) Ethernet cable can
be used for this purpose. (This port is not intended to connect directly to an
Ethernet network.)
Antenna Connector
The antenna connector is a reverse SMA connector.
(An omni-directional antenna is supplied with ESR90xW wireless serial
servers. All ESR90xW serial servers are FCC-certified when the supplied
antenna is used.)
servers. All ESR90xW serial servers are FCC-certified when the supplied
antenna is used.)
Serial Port Connector(s)
• ESR901W232: One DB-9M connector
• ESR901W485: One five-terminal removable terminal block
• ESR902W: Two DB-9M connectors
• ESR901W485: One five-terminal removable terminal block
• ESR902W: Two DB-9M connectors
o
Port 1: RS-232
o
Port 2: software selectable for RS-232, RS-422 or RS-485
• ESR904W: Four DB-9M connectors
o
Ports 1 & 3: RS-232
o
Ports 2 & 4: software selectable for RS-232, RS-422 or RS-
485
Power Connector
The power connector is a removable terminal block with four terminals.
From top to bottom the terminals are:
From top to bottom the terminals are:
Terminal
Number
Terminal
Name
Connect to
Description
1
AC In
One side of AC power supply (if AC
power used)
2
AC In
Other side of AC power supply (if
AC power used)
24 VAC
1
DC GND
Negative side of DC power supply
(if DC power used)
Internally, the chassis ground of the
Server is connected to this terminal.
2 DC
power
supply
Positive side of DC power supply (if
DC power used)
+12VDC to 30 VDC
Vlinx ESR90xW Hardware
12
Chapter 2
Documentation Number: ESR90xW-4905m
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
RS-485 Receiver Biasing
Vlinx ESR90xW wireless serial servers provide built-in receiver biasing on
RS-485 ports (includes the 902W485 port, 902W Port 2 and 904W Ports 2
and 4). The Data(+) line is pulled up to 3.3V supply using a 4.7 kΩ resistor
and the Data(-) line is pulled down to ground, also using a 4.7 kΩ resistor.
RS-485 ports (includes the 902W485 port, 902W Port 2 and 904W Ports 2
and 4). The Data(+) line is pulled up to 3.3V supply using a 4.7 kΩ resistor
and the Data(-) line is pulled down to ground, also using a 4.7 kΩ resistor.
RS-422/485 Terminating
If a terminating resistor is deemed necessary, for RS-422 operation typically
a 120 Ω resistor would be connected across the Receive Data(+) and Receive
Data(-) lines. For RS-485 operation the resistor would be connected across
the Data(+) and Data(-) lines.
a 120 Ω resistor would be connected across the Receive Data(+) and Receive
Data(-) lines. For RS-485 operation the resistor would be connected across
the Data(+) and Data(-) lines.
For more information on Receiver Biasing and RS-422/485 Terminating access the
B&B Electronics RS-422/485 Application Note available at
B&B Electronics RS-422/485 Application Note available at
www.bb-elec.com
)
Connections for Server Configuration
Vlinx ESR90xW Wireless Serial Servers can be configured via:
• A wired connection to a RJ-45 Ethernet connector on the ESR90xW
front panel.
• The wireless network
The wired connection is recommended for configuration, especially when
configuring wireless settings, to ensure communication is not lost while
changing settings.
configuring wireless settings, to ensure communication is not lost while
changing settings.
Figure 6.
Wired Connection for Configuration