Control and Status Byte IP/IE3112
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 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 |
Error |
Limit value 2 |
Limit value 1 |
Over-Range |
Under-Range | ||
|
Name |
description | |
|---|---|---|
|
RegAccess |
0bin: Acknowledgement for process data mode | |
|
Error |
general error bit (value >21mA or <3mA in 4...20mA mode) | |
|
Limit value 2 Limit value 1 |
00bin Limit value not
active | |
|
Over-Range |
R32 Bit 4 = 0: |
R32 Bit 4 = 1: |
|
Under-Range |
R32 Bit 4 = 0 und R32 Bit 5 = 0: |
R32 Bit 4 = 1 und R32 Bit 5 = 1: |
Register Communication
Measured values cannot be transmitted during register communication.
Control Byte
The Control byte is only visible if the Fieldbus Box is operated in complete mode. It 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. It 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 |