PN 305725901, Rev YF
The SerialMode parameter change will not disturb the present serial commu-
nication link. Power should be recycled or a reset command should be issued
to activate the change in the SerialMode setting.
It is strongly recommended to congure and to test 3050 Analyzer in
AMETEK ASCII mode using user-friendly 3050 Analyzer 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 Analyzer, 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-DO Moisture Analyzer
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