Simatic/TI 505 Serial Driver Help
Transparent Byte Addressing
The Simatic/TI 505 Serial driver supports the following addresses when using the Tranparent Byte 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
>
1-6
55
36
1-65535
Short, Word
Long, DWord, Float
Read/Write
W
o
r
d
Outpu
ts
W
Y
<add
r
ess
>
1-6
55
36
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
Word Memory Bit
Access
V<address> .bit address: 1-65536*
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
T
ime
r
/Co
un
te
r
P
r
es
e
t
TCP
<add
r
ess
>
1-
65
53
5
Sho
r
t,
Word Read/WriteT
ime
r
/Co
un
te
r
C
u
r
r
ent
T
CC
<add
r
ess
>
1
-6
55
35
Short,
Word Read/WriteDru
m
S
te
p
Pres
e
t
DS
P<add
r
e
s
s
>
1-3
27
67
Sho
r
t,
Word Read/WriteDru
m
S
te
p
Cur
r
ent
DS
C<a
d
dr
es
s
>
1-3
27
67
Short,
Word Read/WriteDru
m
S
te
p
Cur
r
ent
C
ount
DC
C
<add
r
ess
>
1
-32
76
7
Sho
r
t,
Word Read OnlyDru
m
T
im
e
B
a
s
e
DTB<add
r
ess
>
1-
32
76
7
Sho
r
t,
Word Read/WriteDrum 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 Transparent
Byte 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[10] This denotes an array starting at V100 with a length of 10. This means that the array contains V100, V101,
V102, V103, V104, V105, V106, V107, V108, and V109.
V100[3][3] This denotes a two dimensional array starting at V100 and containing V100, V101, V102, V103, V104,
V105, V106, V107, and V108 in a 3 by 3 array.
Note: Arrays can be either the Word or SHORT data type, with a default of Word.
Status Words
For all Status Words, Bit 1 is the Most Significant Bit (MSB) and Bit 16 is the Least Significant Bit (LSB) in order
from left to right. Users can configure bit addressing to be 0-15 or 1-16 addressing, and can also set the driver
to use 1 or 15 as the MSB (thus changing the bit referencing). For more information, refer to Addressing
Options.
Note: Only addresses that are not used by the controller can be written to.
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