KL8528 - Control and status bytes
Channel 1
Process data mode
Control byte 1 in process data mode
Control byte 1 (CB1) is located in the output image, and is transmitted from the controller to the terminal.
Bit | CB1.7 | CB1.6 | CB1.5 | CB1.4 | CB1.3 | CB1.2 | CB1.1 | CB1.0 |
Name | RegAccess | - | - | - | - | - | DisManu* | - |
Key
Bit | Name | Description | |
|---|---|---|---|
CB1.7 | RegAccess | 0bin | Register communication off (process data mode) |
CB1.6 - CB1.2 | - | 0bin | reserved |
CB1.1 | DisManu* | 0bin | Manual input enabled |
1bin | Manual input disabled | ||
CB1.0 | - | 0bin | reserved |
*) from firmware Version 1B
 | Behavior in case of K-Bus or fieldbus error In the event of a K-Bus or fieldbus error, the output data is usually deleted and the DisManu flag for disabeling manual input is also resetted. Then the manual input is possible again in case of error. |
Status byte 1 in process data mode
The status byte 1 (SB1) is located in the input image and is transmitted from terminal to the controller.
Bit | SB1.7 | SB1.6 | SB1.5 | SB1.4 | SB1.3 | SB1.2 | SB1.1 | SB1.0 |
Name | RegAccess | - | - | - | - | - | DisManu* | - |
Key
Bit | Name | Description | |
|---|---|---|---|
SB1.7 | RegAccess | 0bin | Acknowledgment for process data mode |
SB1.6 - SB1.2 | - | 0bin | reserved |
SB1.1 | DisManu* | 0bin | Manual input enabled |
1bin | Manual input disabled | ||
SB1.0 | - | 0bin | reserved |
*) from firmware Version 1B
Register communication
Control byte 1 in register communication
Control byte 1 (CB1) is located in the output image, and is transmitted from the controller to the terminal.
Bit | CB1.7 | CB1.6 | CB1.5 | CB1.4 | CB1.3 | CB1.2 | CB1.1 | CB1.0 |
Name | RegAccess | R/W | Reg. no. | |||||
Key
Bit | Name | Description | |
|---|---|---|---|
CB1.7 | RegAccess | 1bin | Register communication switched on |
CB1.6 | R/W | 0bin | Read access |
1bin | Write access | ||
CB1.5 - CB1.0 | Reg. no. | Register number: | |
Status byte 1 in register communication
The status byte 1 (SB1) is located in the input image and is transmitted from terminal to the controller.
Bit | SB1.7 | SB1.6 | SB1.5 | SB1.4 | SB1.3 | SB1.2 | SB1.1 | SB1.0 |
Name | RegAccess | R/W | Reg. no. | |||||
Key
Bit | Name | Description | |
|---|---|---|---|
SB1.7 | RegAccess | 1bin | Acknowledgment for register access |
SB1.6 | R | 0bin | Read access |
SB1.5 - SB1.0 | Reg. no. | Number of the register that was read or written. | |
Channels 2 to 8
The control and status bytes of channels 2 to 8 are structured like the control and status byte of channel 1.