4
1 GENERAL
This document specifies the ASCII serial communications protocol used to transfer data
between a master computer station and the PM130. The document provides the complete
information necessary to develop a third-party communications software capable of
communication with the Series PM130 instruments.
All messages within the ASCII communications protocol are designed to consist only of
printable characters.
Additional information concerning communications operation, configuring the communications
parameters and communications connections is found in "Series PM130 Powermeters,
Installation and Operation Manual".
IMPORTANT
In 3-wire connection schemes, the unbalanced current and phase readings for power factor, active power,
and reactive power will be zeros, because they have no meaning. Only the total three-phase power values
can be used.