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Table 5.B
Bit/Word Descriptions for Discrete Data Transfer - Output Table 1/2 Rack
Decimal Bit
Word
(Octal Bit)
Output Enable Bit OE
Bit 15 (17)
Bit 15 (17)
Bit 15 (17)
Module Mode. Bits 12 thru 14 determine the operation of the block module.
Bits 12-14
Bits 12 14
(14-16)
(14-16)
Scaler Mode bit SM
Bit 11 (13)
Bit 11 (13)
Bit 11
Bit 11
Word 0
( 3)
(13)
Default scaling for the output is determined by the catalog number as follows:
Range selection bits. Bit 08 (10) selects voltage and bit 09 (11) selects unipolar or bipolar mode.
Bit 09 (11)
Bits 08-09
Bits 08 09
(10-11)
Bits 00-03
Digital Filter selection. Default of 0000 selects No Filter. Refer to Table 5.B.
Word 1
Bits 00-15 (00 17)
Output data for channel 0.
Word 2
Bits 00-15 (00 17)
Output data for channel 1.
Word 3
Bits 00-15 (00 17)
Not used.
0
Outputs are held at 0.
1
Both outputs are enabled.
14 (16)
13 (15)
12 (14)
0
0
0
0
0
1
1
0
0
Mode
Binary Counts - binary data sent to the outputs and returned from the
Binary Counts - binary data sent to the outputs and returned from the
0
binary
inputs is calibrated, but not scaled, providing maximum possible
inputs is calibrated, but not scaled, providing maximum possible
resolution.
1
default
Default Scaling - When this bit is set to 1, default scaling is in effect.
Default Scaling When this bit is set to 1 default scaling is in effect
1
user
Module
Range
Mode
Mode
Bit 09 (11) Bit 08 (10)
0
0
0
0
0
1
1
0
1
0
1
0
0
1
1
1
1
1
Catalog Number
1791 N4V2, NDV
1791 N4C2, NDC
Bit 08 (10)
Range
0
0
+10V
0
1
+5V
1
0
0-10
1
1
0-5
Chapter 5
Analog Block Applications Using
Discrete Transfers
Description
Note: To calibrate, you must set the Output
Note: To calibrate, you must set the Output
Enable Bit to 1 (refer to Chapter 7).
Normal operation with voltage inputs
Normal operation with current inputs
Calibration operation
Default
Default
Default
Default
Minimum
Maximum
-10000
+10000
-5000
+5000
-20000
+20000
0000
+10000
0000
+5000
0000
+20000
Default
Default
Minimum
Maximum
-10000
+10000
00000
+20000
Approximate
Approximate
Default Resolution
14 Bits
13 Bits
14 Bits
13 Bits
12 Bits
14 Bits
Approximate
Default Resolution
14 Bits
13 Bits
5-3
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