Comtrol Hub DeviceMaster - Manual (Page 96)

96 - Connecting Serial Devices DeviceMaster Installation and Configuration Guide: 2000594 Rev. A
Connecting Serial Devices
RJ45 RS-485 Test
Cable You can use a straight-through cable as illustrated previously, or build your own
cable.
Note: RS-422 pinouts are not standardized. Each peripheral manufacturer uses
different pinouts. Please refer to the documentation for the peripheral to
determine the pinouts for the signals above.
Connecting RJ45
Devices You can use this information to connect serial devices to RJ45 connectors.
Note: This does not include products that use DB9 to RJ45 adapters.
1. Connect your serial devices to the appropriate serial port on the DeviceMaster
using the appropriate cable.
Note: Refer to the hardware manufacturer’s
installation documentation if you need
help with connector pinouts or cabling for
the peripheral device.
2. If the DeviceMaster has RX/TX LEDs, verify that
the devices are communicating properly.
The RX (yellow) and TX (green) LEDs function accordingly when the cable is
attached properly to a serial device.
• After power cycling the DeviceMaster, the RX/TX LEDs are off.
• The LEDs do not function as described until the port has been opened by
an application. You can use Test Terminal to open a port or ports if you
want to test a port or ports (
Testing Ports Using Test Terminal on Page
156).
• If the port is configured for RS-232/422 mode:
- RX LEDs (yellow) are lit
- TX LEDs (green) are lit when as the data exits the port
• If the port is configured for RS-485 mode:
- RX LEDs (yellow) are lit while receiving
- TX LEDs (green) are lit during active data transmission
3. You can refer to Network and Device LEDs on Page 169 for information about
the remaining LEDs.
TRxD-
TRxD+
Signal
TRxD-
TRxD+
Signal
RJ45
4
1
Pins