Michell Instruments QMA601, Руководство пользователя

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QMA601 User’s Manual
Michell Instruments 85
APPENDIX C
Register Configuration C — Modbus Configuration
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
PT PT IA IA IA IA IA IA IA IA
Instrument Address (IA) Protocol Type (PT)
1 to 31 (1=def) 00=RS485
01=USB VCP
10= Ethernet
Register Configuration D — System Configuration
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DC DC CP CP CP CP PS PS PU PU PU TU TU NE
Temperature/Dew Point units (TU) Pressure for Dew-Point Calculations (PS)
00 = C (def)
01 = F
00= Atmospheric (def)
01 = Fixed pressure (User input value)
10 = External Line pressure (Ext sensor)
Pressure Units (PU) Number of cal points to use (CP)
000 = Bar.G (def)
001 = Bar.A
010 = Psi.G
011 = Psi.A
100 = MPa.G
101 = mmHg
110 = MPa.A
Minimum 3 and maximum is 12. Any other
value is also 12.
Dew-Point Calculation method to use (DC) NAMUR Error level preference
00=IGT
01=ISO
10=Ideal Gas (def)
0 = low error (3.0mA)
1 = high error (22.0mA)
Note: when a pressure unit or temperature unit is changed then the user
must manually change the values for the following to the value in the new
selected unit (if relevant).
• Fixed pressure for dew-point calculation
• External line pressure sensor min and max
• Alarm set-points
• Analog output ranges (low and high)