Simatic/TI 505 Serial Driver Help
Address Descriptions
Address specifications vary depending on the model in use. Select a link from the following list to obtain specific
address information for the model of interest.
NITP Addressing
Transparent Byte Addressing
Status Words
NITP Addressing
The Simatic/TI 505 Serial driver supports the following addresses when using the NITP protocol. The default data
type for each address type is indicated in bold.
Address Type Format Range Data Types Access
Disc
r
ete
I
n
p
uts
X<a
d
d
r
ess
>
1-
65
53
6
Boolean Read/WriteDisc
r
ete
Outputs
Y
<add
r
ess
>
1-
65
53
6
Boolean Read/WriteW
o
r
d
Inp
uts
W
X<a
d
d
r
ess
>
1-
65
53
6
1-65535
Short, Word
Long, DWord, Float
Read/Write
W
o
r
d
Outpu
ts
W
Y
<add
r
ess
>
1-
65
53
6
1-65535
Short, Word
Long, DWord, Float
Read/Write
Discrete Control C<address> 1-65536 Boolean Read/Write
W
o
r
d
Mem
ory
V<a
d
d
r
ess
>
1-
65
53
6
1-65535
Short, Word
Long, DWord, Float
Read/Write
W
o
r
d
Mem
ory
Bit
Acc
es
s
V<a
d
d
r
ess
>
.b
it
a
d
dr
es
s
:
1-65
53
6*
bit: 0-15
Boolean Read/Write
C
ons
ta
n
t
Mem
o
r
y
K
<add
r
ess
>
1-
65
53
6
1-65535
Short, Word
Long, DWord, Float
Read Only
C
ons
ta
n
t
Mem
o
r
y
Bit
Ac
c
e
s
s
K
<add
r
ess
>
.b
it
a
d
dr
es
s
:
1-65
53
6*
bit: 0-15
Boolean Read Only
Status Words STW<address> 1-65536
1-65535
Short, Word
Long, DWord, Float
Read/Write
Status Words Bit
Access
STW<address> .bit address: 1-65536*
bit: 0-15
Boolean Read/Write
Timer/Counter Preset TCP<address> 1-65535 Short, Word Read/Write
T
ime
r
/Co
un
te
r
C
u
r
r
ent
T
CC
<add
r
ess
>
1-
65
53
5
Sho
r
t,
Word Read/WriteDru
m
S
te
p
Pres
e
t
DS
P<add
r
e
s
s
>
1-
32
76
7
Sho
r
t,
Word Read/WriteDru
m
S
te
p
Cur
r
ent
DS
C<a
d
dr
es
s
>
1-
32
76
7
Sho
r
t,
Word Read/WriteDru
m
S
te
p
Cur
r
ent
C
ount
DC
C
<add
r
ess
>
1
-3
27
67
Short,
Word Read OnlyDru
m
T
im
e
B
a
s
e
DTB<add
r
ess
>
1
-32
76
7
Short,
Word R
ea
d
/W
r
ite
Drum Count Preset DCP<drum] .<step> drum 1-32767
step 1-16
Short, Word Read/Write
*For more information, refer to 0/1-Based Bit Addressing Option.
The actual number of addresses available for of each type is dependent on the configuration of the PLC.
If at runtime the driver finds that an address is not present in the device, the driver will post an error message
and remove the tag from its scan list.
V Memory Access as Arrays
The Simatic/TI 505 Serial driver supports access to V memory in an array. The size of the array for NITP mode is
limited to 100 V memory registers per array. When accessing large arrays, multiple read/write commands are
used to access consecutive V memory addresses and may require additional time to process. To access V memory
as an array, array notation must be used when entering an address. Array notation is shown in the following
examples:
V100[5] This denotes an array starting at V100 with a length of 5. This means that the array contains V100, V101,
V102, V103, and V104.
V100[2][3] This denotes a two dimensional array starting at V100 and containing V100, V101, V102, V103, V104, and
V105 in a 2 by 3 array.
Note: Arrays can be either the Word or SHORT data type, with a default of Word.
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