Communications

The communications tab allows you to specify the connection settings for the attached meter and establish a connection. This must be done before most other operations may be accomplished. If a button on another tab is greyed out (disabled) and says that no device is connected, return to the communications tab and establish a connection with the meter.

The COM port is the port on your computer that the meter is connected to.

The Modbus Base Address is a hexadecimal value between 01 and FF, typically 01 if there is only one meter to communicate with. The address you enter must match the switches on the meter.

LED Phasing Indicators

3 Flashing Green in sequence: The system power factor is greater than 0.55 and the CTs are properly placed on the corresponding voltage phases.

3 Flashing Red in sequence: The total system power factor is less than 0.55 but are connected properly. This situation is rare but could occur if the load to be monitored is a lightly loaded electric motor, for example.

2 Red: If two LEDs are red and one is green, switch the positions of the two CTs that are red. That should make all three LEDs green.

3 Red: Probably the CTs are connected in the correct order but off by one position. For example, the L1 CT is on the L2 phase, the L2 CT is on the L3 phase and the L3 CT is on the L1 phase. Rotate the CTs until all of the LEDs are green thus ensuring a correct metering condition.