Control and status byte
Register communication
Control byte (for register communication)
The control byte (CB) is located in the output image, and is transmitted from the controller to the terminal.
|
Bit | CB.7 | CB.6 | CB.5 | CB.4 | CB.3 | CB.2 | CB.1 | CB.0 |
Name | RegAccess | R/W | Reg. no. | |||||
Key
|
Bit | Name | Description | |
|---|---|---|---|
CB.7 | RegAccess | 1bin | Register communication switched on |
CB.6 | R/W | 0bin | Read access |
1bin | Write access | ||
CB.5 to CB.0 | Reg. no. | Register number: | |
Status byte (for register communication)
The status byte (SB) is located in the input image, and is transmitted from terminal to the controller.
|
Bit | SB.7 | SB.6 | SB.5 | SB.4 | SB.3 | SB.2 | SB.1 | SB.0 |
Name | RegAccess | R/W | Reg. no. | |||||
Key
|
Bit | Name | Description | |
|---|---|---|---|
SB.7 | RegAccess | 1bin | Acknowledgement for register access |
SB.6 | R | 0bin | Read access |
SB.5 to SB.0 | Reg. no. | Number of the register that was read or written. | |
Process data mode
 | Control and status byte in process data mode In process data mode the control and status bytes of the KL6224 currently have no additional function. |
Control byte in process data mode
The control byte (CB) is located in the output image, and is transmitted from the controller to the terminal.
|
Bit | CB.7 | CB.6 | CB.5 | CB.4 | CB.3 | CB.2 | CB.1 | CB.0 |
Name | RegAccess | - | - | - | - | - | - | - |
Key
|
Bit | Name | Description | |
|---|---|---|---|
CB.7 | RegAccess | 0bin | Register communication off (process data mode) |
CB.6 to CB.0 | - | 0bin | reserved |
Status byte in process data mode
The status byte (SB) is located in the input image, and is transmitted from terminal to the controller.
|
Bit | SB.7 | SB.6 | SB.5 | SB.4 | SB.3 | SB.2 | SB.1 | SB.0 |
Name | RegAccess | - | - | - | - | - | - | - |
Key
|
Bit | Name | Description | |
|---|---|---|---|
SB.7 | RegAccess | 0bin | Acknowledgement for process data mode |
SB.6 to SB.0 | Error | 0bin | reserved |