Control and Status Byte IE2808
Process data mode
Control Byte
The Control Byte (CB) 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 |
CB.7 |
CB.6 |
CB.5 |
CB.4 |
CB.3 |
CB.2 |
CB.1 |
CB.0 |
|
Name |
RegAccess |
ResetErr |
SetDefaultStatus |
- |
- |
- |
- |
- |
|
Bit |
Name |
description | |
|---|---|---|---|
|
CB.7 |
RegAccess |
0bin |
Register Communication switched off (Process data mode) |
|
CB.6 |
ResetErr |
1bin |
Sets back errors, displayed at status byte |
|
CB.5 |
SetDefaultStatus |
1bin |
Sets outputs to default status defined by Register R33 |
|
CB.4 |
- |
0bin |
reserved |
|
... |
... |
... |
... |
|
CB.0 |
- |
0bin |
reserved |
Status Byte
The Status Byte (SB) 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 |
SB.7 |
SB.6 |
SB.5 |
SB.4 |
SB.3 |
SB.2 |
SB.1 |
SB.0 |
|
Name |
RegAccess |
Error |
UnderVoltage |
OvrCurrentGrp2 |
OvrCurrentGrp1 |
- |
DefaultStatus |
- |
|
Bit |
Name |
description | |
|---|---|---|---|
|
SB.7 |
RegAccess |
0bin |
Acknowledgement for process data mode |
|
SB.6 |
Error |
0bin |
general error bit: no error has occurred |
|
1bin |
general error bit: an error has occurred | ||
|
SB.5 |
UnderVoltage |
0bin |
Load voltage UL≥ 18 V |
|
1bin |
Load voltage UL < 18 V, UL-LED shines red, but the outputs stay switched | ||
|
SB.4 |
OvrCurrentGrp2 |
0bin |
no error |
|
1bin |
Short circuit detected at an output of group 2. The concerned output is displayed by the input byte Diag2. After repair this error display has to be set back by bit CB.6 of control byte. | ||
|
SB.3 |
OvrCurrentGrp1 |
0bin |
no error |
|
1bin |
Short circuit detected at an output of group 1. The concerned output is displayed by the input byte Diag1. After repair this error display has to be set back by bit CB.6 of control byte. | ||
|
SB.2 |
- |
0bin |
reserved |
|
SB.1 |
DefaultStatus |
0bin |
Outputs in operation |
|
1bin |
Outputs have been set to default status, defined by R33 | ||
|
SB.0 |
- |
0bin |
reserved |
Register Communication
Control Byte
The Control Byte (CB) 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 |
CB.7 |
CB.6 |
CB.5 |
CB.4 |
CB.3 |
CB.2 |
CB.1 |
CB.0 |
|
Name |
RegAccess |
R/W |
Register number | |||||
|
Bit |
Name |
description | |
|---|---|---|---|
|
CB.7 |
RegAccess |
1bin |
register access switched on |
|
CB.6 |
R/W |
0bin |
Read |
|
1bin |
Write | ||
|
CB.5 - CB.0 |
Register number |
Number of the register that is to be read or written. | |
Status Byte
The Status Byte SB 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 |
SB.7 |
SB.6 |
SB.5 |
SB.4 |
SB.3 |
SB.2 |
SB.1 |
SB.0 |
|
Name |
RegAccess |
R/W |
Register number | |||||
|
Bit |
Name |
description | |
|---|---|---|---|
|
SB.7 |
RegAccess |
1bin |
Acknowledgement for register access |
|
SB.6 |
R/W |
0bin |
Read |
|
SB.5 - SB.0 |
Register number |
Number of the register that has been read or written. | |