AutomationDirect DL205 Manual

DL205 Analog Manual, 7th Edition Rev. D
16-17
Chapter 16: F2-8AD4DA-2, 8-Ch. In / 4-Ch. Out Analog Voltage Combination
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Module Configuration Example 1:
Number of Channels = 8 in, 4 out,
Data Format = binary in, BCD out,
Input Resolution = 16 bit,
Input Track and Hold = none, real time value.
NOTE: Binary data format is recommended for 14 or 16 bit resolution input data, especially if the input
data is to be used in any math instructions (DL205 User Manual, ch.5). There is only one V-memory word
(16 bits) available for the actual data. Although the 12 bit resolution maximum value of 4095 can be stored
in one word using either binary or BCD formats, the 14 and 16 bit resolution maximum values of 16383 and
65535 both exceed the BCD format’s maximum single word capacity of 9999. Double word math would be
required for 14 or 16 bit data in BCD format. Binary data format is also useful for displaying data on some
operator interfaces.
SP0
LD
K
LDA
O2000
OUT
V7673
Loads aconstantthatspecifies the numberofchannelstoscan and
thedataformat. (See note below regarding dataformat.)
Theupper byte applies to the inputs. The most significant ribble
(MSN)selects the dataformat(0=BCD, 8=Binary), and theLSN
selects the number of channels(1, 2, 3, 4, 5, 6, 7, or 8) to scan.
Thelower byte
appliestothe outputs.The most significant nibble
(MSN)selects the dataformat(0=BCD, 8=Binary), and theLSN
selects the number of channels(1, 2, 3, or 4) to scan.
This constant designatesthe firstV-memorylocationthatwill be
used to storethe input data. Forexample,the O2000 entered here
would mean:Ch1 -- V2000, V2001; Ch2--V2002,V2003; Ch3--
V2004,V2005;Ch4 -- V2006, V2007;Ch5 -- V2010,V2011; Ch6--
V2012,V2013;Ch7 -- V2014, V2015;Ch8 -- V2016,V2017. Foreach
channel,the 1stword holds thedata, andthe 2nd word is needed
onlywhendisplaying14or16 bit datainBCD format.The 2nd word
contains themostsignificant digitinthose cases.
Theconstant O2000isstored here. V7673isassigned to slot 3 and
acts as a pointer,whichmeansthe CPUwilluse thevalue in this
locationtodetermine exactlywheretostore theincoming data.
OUT
V7663
Special V-memory location assignedtoslot3that contains the
numberofinput and output channels.
LDA
O2020
OUT
V7703
This constant designatesthe firstV-memorylocationthatwill be
used forthe analog output data. Forexample, theO2020 entered
here wouldmean: Ch1--V2020,V2021;Ch2 -- V2022,V2023;Ch3 --
V2024,V2025;Ch4 -- V2026, V2027. For eachchannel,the 1stword
holds the data, and the 2nd word is needed onlywhen displaying14
or 16 bit datainBCD format.The 2ndwordcontains themost
significant digitinthosecases.
Theconstant O2020isstored here. V7703isassigned to slot 3 and
acts as a pointer,whichmeansthe CPUwilluse thevalue in this
location to determine exactlywhereto obtain the output data.
8804
LD
KAAAA
Loads aconstantthatspecifies theresolutions for eachofthe input
channels. This constant is determinedbythe values of two bitsper
channel,asshown previously in “InputResolutions Selection Bits”.
Theconstant AAAA(hex)configures each of theeight i
nputchannels
for16bits.
OUT
V36403
SpecialV-- memory location assigned to slot 3that containsthe
resolution settings foreachofthe inputchannels.
LD
K0
Loadsaconstant that specifiesthe trackand hold settings foreach
of theinput channels. This constant is determinedbythe values of
twobits per channel,aspreviouslyshownin“Track and Hold
Selection Bits”. Theconstant 0configures eachofthe eightinput
channelsfor no track and hold.
OUT
V36423
SpecialV-- memory location assigned to slot 3that containsthe track
and holdsettings foreachofthe inputchannels..

AutomationDirect DL205 Specifications

General

Brand	AutomationDirect
Model	DL205
Category	Controller
Language	English