Chapter 6 Installing the EX2 expansion module
Interpreting EX2 LEDs
The information in this section will help you interpret LED activity on the EX2 expansion module. Figure 52 shows the location of each LED.
Figure 52. LED locations on the EX2
Binary output LEDs
Status LED
TX and RX communications LEDs
Binary output LEDs
The LEDs labeled LD2 through LD5 indicate the status of the four binary outputs. Table 24 describes binary output LED activity.
Note:
Each binary output LED reflects the status of the output relay on the circuit board. It may or may not reflect the status of the equipment the binary output is controlling. Field wiring determines whether the state of the binary output LED also applies to the status of the end device. Table 24 describes the LED states.
Table 24. Binary output LEDs
LED activity | Explanation |
|
|
LED is on continuously | The relay output is energized. |
|
|
LED is off continuously | The relay output is |
| power to the board. |
|
|
96 |