PN 305200901, Rev YT
The SerialMode parameter change will not aect the present serial commu-
nication link. Power should be cycled O-On or a reset command should be
issued to activate the change in the serial mode setting.
It is strongly recommended to conFigure and to test 3050 Analyzer in AMETEK
ASCII mode using user-friendly 3050 Congurator Software. The Modbus RTU
protocol mode should be used for monitoring purposes.
When designing a Modbus RS-485 multi-drop communication system with the
3050, the system designer should consider the following:
• Analyzer primary output is moisture concentration and analyzer status
codes. The update rate of the moisture concentration is one time per min-
ute or less. Polling of these registers more frequently than once a second is
not recommended.
• The maximum polling rate of a Modbus multi-drop system is determined
by a number of factors including the number of devices on the system, the
number of registers being polled from each device, the Baud Rate in half-
duplex operation. Calculations, and possibly experimentation, are needed
to attain optimal system operation.
6-2 | 3050-OLV Moisture Analyzer
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