QUICKDESIGNER
Profibus
••••
193
Tag Variables
Valid tag variable names and address ranges are shown in the Profibus DP Protocol dialog box when
you configure the protocol.
The number of Input and Output words and the addressing will determine the valid address range limits
for each variable type. The variable type names are fixed and are displayed in a cell corresponding to
the addressing type.
Example 3,
Byte Addressing:
Input Words = 64, Output Words = 64, Input start address = 0, Output
start address = 0.
Name
Address range
Value range
Write
Type
I (Input Bit)
I0.0 to I127.7
0 to 1
Y
Bit
Q (Output Bit)
Q0.0 to Q127.7
0 to 1
N
Bit
IB (Input Byte)
IB0 to IB127
0 to 255
Y
Byte
QB (Output Byte)
QB0 to QB127
0 to 255
N
Byte
IW (Input Word)
IW0 to IW126
-32768 to 32767
Y
Word
QW (Output Word)
QW0 to QW126
-32768 to 32767
N
Word
ID (2 Word Input)
ID0 to ID124
-999999999 to
999999999
Y
DWord
QD (2 Word Output)
QD0 to QD124
-999999999 to
999999999
N
Dword
IB0
IB1
IB2
IB3
IB4
IB5
IB124
IB125
IB126
IB127
IW0
IW1
IW2
ID0
ID1
ID2
IW126
ID124
BYTE
WORD
DWORD
QB0
QB1
QB2
QB3
QB4
QB5
QB124
QB125
QB126
QB127
QW0
QW1
QW2
QD0
QD1
QD2
QW126
QD124
BYTE
WORD
DWORD