Control and Status Byte IP/IE4112
Process Data Mode
Control Byte
The Control byte is only visible, if the Fieldbus Box is operated in complete mode. The byte is located in the output image, and can be read or written.
|
Bit |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
|
Name |
RegAccess |
reserved | ||||||
|
Bit |
description |
|---|---|
|
RegAccess |
0bin: Register Communication switched off (Process data mode) |
Status-Byte
The Control byte is only visible if the Fieldbus Box is set to complex mode. The byte is located in the Fieldbus Box's input image, and can only be read.
|
Bit |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
|
Name |
RegAccess |
reserved | ||||||
|
Name |
Description |
|---|---|
|
RegAccess |
0bin: Acknowledgement for Process Data Mode |
Register Communication
Control Byte
The Control byte is only visible if the Fieldbus Box is operated in complete mode. The byte is located in the output image, and can be read or written.
|
Bit |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
|
Name |
RegAccess |
R/W |
Register number | |||||
|
Name |
description |
|---|---|
|
RegAccess |
1bin: Register Communication switched on |
|
R/W |
0bin: Read |
|
Register number |
Number of the register that is to be read or written |
Status Byte
The Status byte is only visible if the Fieldbus Box is operated in complete mode. The byte is located in the input image, and can only be read.
|
Bit |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
|
Name |
RegAccess |
R/W |
Register number | |||||
|
Name |
description |
|---|---|
|
RegAccess |
1bin: Acknowledgement for register access |
|
R/W |
0bin: Read |
|
Register number |
Number of the register that has been read or written |