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Communication & Verification
PowerScout HD
Signal Names—Some RS-485 devices use the terminology A/B while others use +/-. Note that A
is (-) and B is (+). Many manufacturers incorrectly label the terminals.
Bus Loading—The PSHD meter is a 1/8
th
unit load allowing up to 256 like devices in parallel.
Communication Verification
Verification includes confirmation of BOTH the physical interface settings (Serial or Ethernet)
and the protocol (Modbus or BACnet) settings.
The LCD User Interface can be used to quickly confirm the settings required for the desired interface and
protocol. The interface is intuitive and groups together commonly associated registers. The complete
interface for PS12HD/PS24HD/PS48HD is presented in Appendix A as a navigational map. Arrows
indicate how to move from one menu display to the next. A Reverse Contrast entry in the
documentation indicates the active menu item in a list which corresponds to a blinking character in the
physical LCD. The ENTER button is used to select a property and up / down buttons are used to select
among the values supported by the meter. Note that changes to the meter configuration are limited to
the communication interface using the LCD. If additional changes (such as CT type) are required, they
must be made using a software interface.
Because the LCD User Interface on the PS3HD is two lines instead of four, navigating the menu structure
is different from the PS12HD, PS24HD, or PS48HD. Additionally, the PS3HD features a navigation thumb
wheel which allows the user to scroll up or down and select menu options by pressing the thumb wheel.
While the User Interface allows for checking real time values, it does not allow for advanced meter
configuration. ViewPoint HD is the recommended configuration tool for the PS3HD.
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