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10. LED Indicators
The gateway contains several different LED indicators, each of which conveys
important information about the status of the unit and connected networks.
These LEDs and their functions are summarized here.
10.1 Toshiba ASD Common Serial Port Indicators
Each Toshiba ASD common serial port RJ45 connector contains two integrated
green LEDs. Figure 8 indicates the functions of these LEDs.
Data Write
Flashes briefly when data is
written to the drive from the
point database
Drive Link
Solid green when a logical
connection exists with the
attached drive
Figure 8: Toshiba Drive Connector Indicators
The Data Write indicator is useful for confirming that a specific drive is having
data written to it, while the Drive Link indicator provides an easy method of
determining that the gateway and drive are successfully exchanging data,
independent of any other network activity.
10.2 RS232 (MMI) Port Indicators
The RS232 port RJ45 connector also contains two integrated green LEDs.
Figure 9 indicates the functions of these LEDs.
Reserved
Currently reserved for future
applications (always OFF)
Modbus Plus Network
Status Indicator
Indicates Modbus Plus
network status/activity. Refer
to appropriate Modbus Plus
specifications for detailed
information.
Figure 9: RS232 Port Indicators