PLX51-DL-232
Diagnostics
Data Logger
User Manual
ProSoft Technology, Inc.
Page 37 of 59
5 Diagnostics
5.1 LEDs
The PLX51-DL-232 provides three LEDs for diagnostics purposes as shown below.
Figure 5.1 - Data Logger front view
Table 5.1 - Module LED operation
LED
Description
Ok
The
Ok
LED provides information of the system-level operation of the PLX51-DL-
232.
If the LED is green, then the PLX51-DL-232 has booted and is running correctly.
If the LED is red, then the PLX51-DL-232 is not operating correctly. For example, if
the PLX51-DL-232 application firmware has been corrupted or there is a hardware
fault,
Ok
LED will be red.
Act
The
Act
LED is used for the RS232 serial port. For every successful received DF1
or Modbus-RTU packet, the
Act
LED toggles green. The LED toggles red if a
corrupted packet is received (eg. failed checksum).
Eth
The
Eth
LED illuminates when an Ethernet link is detected (by plugging in a
connected Ethernet cable). The LED flashes when traffic is detected.