Black Box GEH-6510 - Manual (Page 11)

DDE Server User’s Guide Chapter Two - Overview •••• 7
Chapter Two - Overview
About PMCS
GE’s Power Management Control System consists of four basic parts: the power-
management devices, the network connecting the devices to the host, the PMCS DDE
Server software, and the client applications. This section provides an overview of the
parts and their functions.
Three versions of the PMCS DDE Server are available; one version runs on an RS-
485 Modbus RTU-based host PC, other versions run on Ethernet TCP/IP-based host
PCs. The power-management devices supported by PMCS are Modbus based (or
commnet devices integrated with Modbus via the POWER LEADER
TM Modbus
Concentrator). ). Subsequently, the two PMCS DDE Servers are Modbus-based and
one is EI protocol based.
The two versions permit PMCS communications to Modbus-based devices using 1)
RS-485, or an Ethernet EPM 7700 Xpress card or XPLEX 1620 Max Server and 2)
Modbus TCP/IP and one version on EI protocol based devices using RS-485.
An illustration of the three versions is shown in the following figures.
Figure 1. PMCS DDE Server: Modbus RS485 and TCP/IP configurations.