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10Base-T LED Descriptions (Continued)
LED Indicator
Off
Link is not established.
Port LED Descriptions
Indicator
All LEDs flash during the power-on test
Flash
and then turn off, indicates successful
Briefly
completion of power on self-check.
1 LED Lit*
A RAM self-test failure or other
Solid
mainboard error.
2 LEDs Lit* Ethernet hardware initialization failure.
3 LEDs Lit* A hardware self-test failure.
4 LEDs Lit* A flash memory configuration error.
* The LEDs light up for a about a minute and then the
hardware resets and the same cycle repeats.
Connecting Devices
Use the following discussion to connect RS-232
asynchronous devices to the RocketPort Serial Hub
ports.
1. Connect your RS-232 devices to Ports 1 through 4 or
8 (depending on the model), for each RocketPort
Serial Hub. RJ45 to DB25 cables are available from
Comtrol or you can build your own cables using the
following information.
Note: Use the hardware manufacturer's installation
documentation if you need help with connector
pinouts or cabling for your device.
2. Install or reconfigure VS-Link using the Software
Installation and Configuration Guide.
RS-232 Cabling
Use the following for pinout information for the RJ45
serial port connectors on the RocketPort Serial Hub.
RJ45 Pin
1
2
3
4
5
6
7
8
Pin 1
Pin 8
Description
Description
RS-232 Signals
RTS
DTR
GND
TxD
RxD
DCD
DSR
CTS
Receptacle
Pin 1
Building Additional Loopback Plugs
Loopback connectors are RJ45 serial port plugs, with
pins wired together as shown, that are used in
conjunction with the diagnostic software to test serial
ports. This unit shipped with a a single loopback plug.
This information can help you build additional plugs or
replace a missing loopback.
Use the following information to
build loopback plugs.
•
Pins 4 to 5
•
Pins 1 to 8
•
Pins 2 to 6 to 7
Note: Do not insert the serial
port loopback plug into
the 10Base-T Ethernet
connector.
Building an RJ45 to DB25 Cable
Use the following figures if you need information about
building a general-purpose DTE-to-DTE null modem
cable or a DTE-to-DCE modem cable.
Modem Cable
DTE-to-DCE Modem Cable*
Signal
Pin
RTS
1
DTR
2
GND
3
TxD
4
RJ45
RxD
5
DCD
6
DSR
7
CTS
8
* Can be ordered from Comtrol.
General-Purpose DTE-to-DTE Null Modem Cable
Signal
Pin
TxD
4
RxD
5
RTS
1
CTS
8
RJ45
DSR
7
DCD
6
DTR
2
SGND
3
Signal
Pin
RTS
1
DTR
2
GND
3
TxD
4
RxD
5
DCD
6
DSR
7
CTS
8
Pin
Signal
4
RTS
20
DTR
7
GND
2
TxD
DB25
3
RxD
8
DCD
6
DSR
5
CTS
Pin
Signal
2
TxD
3
RxD
4
RTS
5
CTS
DB25
20
DTR
8
DCD
6
DSR
7
SGND
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