DL205 Analog Manual, 7th Edition Rev. D
6-14
Chapter 6: F2-04RTD 4-Channel RTD Input
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B
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D
Magnitude Plus Sign (Binary)
Magnitude Plus Sign (BCD)
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b
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SP1
OUT
C1
LD
V2000
OUT
V2010
Load channel 1 data from V-memory into the
accumulator. Contact SP1 is always on.
Put the actual signal value in V2010. Now you can use
the data normally.
ANDD
K7FFF
This instruction masks the sign bit of the binary data, if
it is set. Without this step, negative values will not be
correct so do not forget to include it.
V2000
K8000
Channel 1 data is negative when C1 is on (a value of
--1.0 reads as 8010, --2.0 is 8020, etc.).
SP1
OUT
C2
LD
V2002
OUT
V2012
Load channel 2 from V-memory into the accumulator.
Contact SP1 is always on.
Put the actual signal value in V2012. Now you can use
the data normally.
ANDD
K7FFF
This instruction masks the sign bit of the binary data, if
it is set. Without this step, negative values will not be
correct so do not forget to include it.
V2002
K8000
Channel 2 data is negative when C2 is on (a value of
--1.0 reads as 8010, --2.0 is 8020, etc.).
²
²
Check Channel 1
Check Channel 2
SP1
OUT
C1
LDD
V2000
OUTD
V2010
Load channel 1 data from V-memory into the
accumulator. Remember, the data can be negative.
Contact SP1 is always on.
Put the actual signal value in V2010. Now you can use
the data normally.
ANDD
K7FFFFFFF
This instruction masks the sign bit of the BCD data, if it
is set. Without this step, negative values will not be
correct so do not forget to include it.
V2001
K8000
Check Channel 1
Check Channel 2
Channel 1 data is negative when C1 is on (a value of
--1.0 reads as 8000 0010, --2.0 is 8000 0020, etc.).
SP1
OUT
C2
LDD
V2002
OUTD
V2012
Load channel 2 from V-memory into the accumulator.
Remember, the data can be negative. Contact SP1 is
always on.
Put the actual signal value in V2012. Now you can use
the data normally.
ANDD
K7FFFFFFF
This instruction masks the sign bit of the BCD data, if it
is set. Without this step, negative values will not be
correct so do not forget to include it.
V2003
K8000
Channel 2 data is negative when C2 is on (a value of
--1.0 reads as 8000 0010, --2.0 is 8000 0020, etc.).
²
²
Summary of Contents for DL205
Page 1: ...DL205 Analog I O Manual Manual Number D2 ANLG M ...
Page 2: ...Notes ...
Page 6: ...Notes ...