Rockwell Automation 1760-DNET Pico DeviceNet Communications Module User Manual User Manual
Page 117
Publication 1760-UM003A-EN-P - September 2005
Pico GFX Control Commands 7-37
3 – 6
4 – 7
Data 1 – 4
Read operation
00
depending on
index,Table 6.133
Write operation
depending on index,
Table 6.133
00
Table 6.132 Operand Overview
Index
(hex)
Operand
read
write
00
Bit IO, Table 6.133
x
01
Mode/Parameter
–
–
02
Comparison value
I1
x
c
(1)
(1) The value can only be written if it is assigned to a constant in the program.
03
Comparison value
I2
x
c
(1)
TIP
The data for index 2 and 3 is transferred as a 32-bit
value in Intel format (Data 1 – Low Byte to Data 4 –
High Byte).
Table 6.133 Index 0 – Bit IO
FB output Data 3
Bit
7
6
5
4
3
2
1
–
–
–
–
GT
(1)
(1) greater than: Status 1 if the value at I1 is greater than value at I2 (I1 > I2)
EQ
(2)
(2) equal: Status 1 if the value at I1 is equal to value at I2 (I1 = I2)
LT
(3)
(3) less than: Status 1 if the value at I1 is less than value at I2 (I1 < I2)
Table 6.131 Telegram Structure
Byte
Meaning
Value (hex), sent by
Master Slave
Master
Slave