Emerson Rev AA Manuel D’Utilisation

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Reference Manual
00809-0200-4708, Rev AA
January 2014
SteamLogic OPC Server 
Table of contents
1.1
Introduction
The Smart Wireless Gateway enables IEC62591 WirelessHART technology; wireless transmitters 
communicating with each other and the Gateway in a self-organizing wireless mesh network. The 
Gateway manages the network, its communication, security and connectivity. The gateway is the 
entry point for wireless device data that is then converted to a format that is compatible with other 
systems. In the case of steam trap monitoring this other system is SteamLogic, monitoring software. 
This document focuses on OPC system integration for the SteamLogic software and the Rosemount 
708 Wireless Discrete Transmitter. 
The objective of the SteamLogic OPC Server is to give access to the trap state that is calculated 
within the SteamLogic software. 
1.2
OPC mapping
The following table translates the OPC value, seen by the client, to a steam trap state and user 
interface icon. 
OPC 
value
State
User interface 
icon
Meaning
0
Good 
Steam trap is functioning normally under the current settings
1
Cold
Steam trap is in a failed cold position. This steam trap may have a mechanical 
failure or could be plugged with solids. It could also be flooding or 
undersized for the application making it unable to remove enough 
condensate. Otherwise the steam supply could be turned off.