13
Item Names (S5 Item Syntax)
The Siemens 3964R I/O Server supports item/point names that are consistent with the
point naming convention used by Siemens 3964R CPs. The tables below list the
item/point names supported by the server:
Data Blocks/Extended Range Data Blocks
Data Format
Items
Suffix Tag Type
Range
Bit D<B,X>
m
Dn.
b
Discrete
0 or 1
String D<B,X>
m
Sn.
z
Message
2 to 128
Left Byte
D<B,X>
m
DL
n
Integer
0 to 255
KF
Integer
-128 to 127
Right Byte
D<B,X>
m
DR
n
Integer
0 to 255
KF
Integer
-128 to 127
Word D<B,X>
m
DW
n
Integer
0 to 65535
KF
Integer
-32768 to 32767
BCD
Integer
-999 to 999
KC
Integer
0 to 999
KT
Message
0.0 to 999.3
Double Word
D<B,X>
m
DD
k
Integer -2147483648
to
2147483647
BCD
Integer
-9999999 to 9999999
KG
Real
floating
point
Note
All data blocks are Read/Write (
m
=2 to 255,
n
= 0 to 255,
b
=0 to 15,
k
= 0 to 254,
z
=length of character string). The string must contain an even number of characters,
e.g., 2, 4, 100, 128, etc.