Control and Status Byte IP/IE3102
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 |
- | ||||||
Key:
|
Bit |
Name |
description | |
|---|---|---|---|
|
7 |
RegAccess |
0bin |
Register Communication switched off (Process data mode) |
|
6...0 |
- |
reserved | |
Status byte
The Status byte is only visible if the Fieldbus Box is set to 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 | ||
Key:
Bit | Name | description | |
|---|---|---|---|
7 | RegAccess | 0bin | Acknowledgement for process data mode |
6 | Error | general error bit | |
5,4 | Limit value 2 | 00bin | Limit value 2 not active |
01bin | Process data > limit value 2 | ||
10bin | Process data < limit value 2 | ||
11bin | Process data = limit value 2 | ||
3,2 | Limit value 1 | 00bin | Limit value 1 not active |
01bin | Process data > limit value 1 | ||
10bin | Process data < limit value 1 | ||
11bin | Process data = limit value 1 | ||
1 | Over-Range | 1bin | if R32 Bit 4 = 0: Range of measurement exceeded (>0x7FFF) |
if R32 Bit 4 = 1: Measured value ≥ 10.5 V | |||
0 | Under-Range | 1bin | if R32 Bit 4 = 0: Measurement is below range (> 0x8000) |
if R32 Bit 4 = 1: Measured value ≤ -10.5 V | |||
Note The user scaling must be modified in order to change the under/over range limits. Example: You want to set an over range value of 10.6 V. You therefore have to activate the user scaling, and change the gain in register 34 to 0x00F0. The measuring range now goes up to 10.6 V (the maximum possible is 11.8 V). |
Register Communication
Measured values cannot be transmitted during register communication.
Control Byte
The Control byte is only visible if the Fieldbus Box is set to 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 | |||||
Key:
|
Bit |
Name |
description | |
|---|---|---|---|
|
7 |
RegAccess |
1bin: |
Register Communication switched on |
|
6 |
R/W |
0bin |
Read |
|
1bin |
Write | ||
|
5...0 |
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 set to complete mode. It 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 | |||||
Key:
|
Bit |
Name |
description | |
|---|---|---|---|
|
7 |
RegAccess |
1bin |
Acknowledgement for register access |
|
6 |
R/W |
0bin |
Read |
|
5...0 |
Register number |
Number of the register that has been read or written | |