ProSoft Technology inRAx 3170-PDP, Руководство пользователя

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How Communication Takes Place and I/O Image Table Mapping 3170-PDP ♦ FLEX Platform
FLEX I/O™ PROFIBUS Adapter
ProSoft Technology, Inc. Page 37 of 152
August 23, 2007
Word Dec. Bits (Octal
Bits) Description
08 (10)
Calibration Range bit – set to 1 if a reference signal is out of
range during calibration
09 (11) Calibration Done bit – set to 1 after an initiated calibration
cycle is complete.
10 (12) Calibration Bad bit – set to 1 if the channel has not had a
valid calibration.
11 to 15 (13 to 17) Unused – set to 0
Write word 1 00 to 01 Module Data Type
Bit 01 00
0 0 °C (default)
0 1 °F
1 0 Bipolar counts scaled between –32768 and
+32767
1 1 Unipolar counts scaled between 0 and
65535
02 Enhanced mode select – measures voltage drop across a
precision resistor in the module to compare with the
unknown input.
03 to 05 A/D Filter First Notch Frequency
Bit 05 04 03 Definition
0 0 0 10Hz (default)
0 0 1 25Hz
0 1 0 50Hz
0 1 1 60Hz
1 0 0 100Hz
1 0 1 250Hz
1 1 0 500Hz
1 1 1 1000hZ
06 Calibration High/Low bit – This bit is set during gain
calibration; reset during offset calibration.
07 Calibration clock – this bit must be set to 1 to prepare for a
calibration cycle; then reset to 0 to initiate calibration.
08 to 15
Calibration mask – The channel, or channels, to be
calibrated will have the correct mask bit set. Bit 0
corresponds to channel 0, bit 1 to channel 1, and so on.
Write Word 2 00 to 03 Channel 0 RTD Type
Bit 03 02 01 00 RTD Type – Range
0 0 0 0 Resistance (default)
0 0 0 1 No sensor connected – do not scan
0 0 1 0 100 ohm Pt  = 0.00385 Euro (–200 to
+870°C)
0 0 1 1 100 ohm Pt  = 0.003916 U.S. (–200
to +630°C)
0 1 0 0 200 ohm Pt  = 0.00385 (–200 to
+630°C)