www.CoolGear.com
6.
Under
“Mode”
, you can select operation mode of serial port.
7.
Under
“Control Bits”
, you can enable or disable BIASing and termination resistors. This option is only
available when the serial port is set to RS-422 and RS-485 mode.
7.1 Click “BIAS” to enable Tx ,Rx BIASing resistors.
If the BIASing resistors are already enabled, click “BIAS” again the BIASing resistors will be disabled.
When Tx ,Rx BIASing resistors are enabled, the TxD+ (data+) and RxD+ will pull-up with 750 Ohm resistors,
and the TxD-(data-) and RxD- will also pull-down with 750 Ohm resistors.
7.2 Click “TxTerm” to enable the Tx termination resistor.
If the termination resistor is already enabled, click “TxTerm” again the Tx termination resistor will be
disabled.
When Tx termination resistors are enabled, a 120 Ohm termination resistor will be added between the
TxD+ (data+) and TxD- (data-).
7.3 Click “RxTerm” to enable the Rx Termination resistor.
If the termination resistor already enabled, click “RxTerm” again the Rx termination resistor will be
disabled.
When Rx termination resistors are enabled, a 120 Ohm Termination resistor will be added between the
RxD+ and RxD-.
8.
When you finish the hardware configuration setting, double click “Commit Change” to save all configuration
data into EEPROM. Press the CONFIG button to exit the hardware configuration setting. The blue LED will
change to dark. You are in normal operation mode now.
9.
When a new USBG-COM-PRO Series Industrial I/O Adapter is attached to the system, please double click the
“Search Devices”
to re-start hardware configuration setting for this device.
LED Indicators
The
USBG-8COM-PRO
Series Industrial I/O Adapters are designed with monitor LEDs of TxD & RxD indicating serial port
data transmit and receive status, and with Operation Mode LEDs indicating serial port operation mode of RS-
232/422/485.
Operation Mode and Mode LED Color
Operation Mode
Mode LED Color
RS-232
Red
RS-422
Green
RS-485 auto,2-Wire with echo
Orange
RS-485 auto,2-Wire no echo
Orange
RS-485 auto ,4-Wire
Orange
RS-485 by RTS,2-Wire with echo
Orange
RS-485 by RTS,2-Wire no echo
Orange
