Configuration block for a block transfer write – Rockwell Automation 1771-N SERIES High Resolution Analog Module User Manual User Manual
Page 55
4–15
Configuring the Module
Publication 1771ĆUM127B-EN-P - December 2002
RTD Type
This field lets you select the type of sensor connected to a 650 ohm
input channel. This field must be 0 for all other channel types.
Sensor Type
BinaryValue
Decimal 10
09
08
Octal 12
11
10
Resistance
0
0
0
100 Ohm Pt. European Std.
0
0
1
100 Ohm Pt. U.S. Std.
0
1
0
10 Ohm Copper
0
1
1
120 Ohm Nickel
1
0
0
10 Ohm Offset
This field lets you compensate for a small offset error in a 10 ohm
copper RTD. Values can range from -0.99 to +0.99 ohms in units of
0.01 ohms.
For example, if the resistance of a copper RTD used with this
channel was 9.74 ohms at 25
o
C, you would enter -0.26 in this field.
The configuration block for a block transfer write consists of:
•
module configuration header
•
output channel data (if applicable)
•
output channel programming (if applicable)
•
input channel programming (if applicable)
Block Transfer Write Configuration Data Header
The configuration data header consists of information required for
the processor to properly identify the type of information it will be
receiving.
Module Configuration Data Header
Word/Dec. Bit
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Word/Octal Bit
17
16
15
14
13
12
11
10
07
06
05
04
03
02
01
00
0
BTW word type
Constant
Number of outputs
Constant
0
1
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
Configuration Block for a
Block Transfer Write