KL8528 - Process image
The KL8528 is represented in the process image with 6 bytes each of input and output data. These are organized as follows:
Byte offset | Format | Input data | Output data |
|---|---|---|---|
0 | Byte | Status byte (SB), for register communication only | Control byte (CB), for register communication only |
1 | Byte | Data byte 1 (auto/manual for output 1 to 8) | Data byte 1 (sets output 1 to 8)* |
2 | Byte | Data byte 2 (switch position for output 1 to 8) | Data byte 2 (reserved) |
3 | Byte | reserved | Data byte 3 (sets LED 1 to 8 green) |
4 | Byte | reserved | Data byte 4 (sets LED 1 to 8 yellow) |
5 | Byte | reserved | reserved |
*) If the respective switch is set to auto.
Process data
Input data
Data byte 1
Data byte 1 indicates the positions of the switches (auto/man).
Bit | Name | Description | |
|---|---|---|---|
0 | enAutoCh1 | 1bin | Switch of channel 1 is set to auto: the PLC controls this channel. |
1 | enAutoCh2 | 1bin | Switch of channel 2 is set to auto: the PLC controls this channel. |
... | ... | ... | |
7 | enAutoCh8 | 1bin | Switch of channel 8 is set to auto: the PLC controls this channel. |
Data byte 2
Data byte 2 indicates the positions of the switches (off/on).
Bit | Name | Description | |
|---|---|---|---|
0 | Switch1 | 0bin | Switch of channel 1 is set to off |
1bin | Switch of channel 1 is set to on | ||
1 | Switch1 | 0bin | Switch of channel 2 is set to off |
1bin | Switch of channel 2 is set to on | ||
... | ... | ... | |
7 | Switch1 | 0bin | Switch of channel 8 is set to off |
1bin | Switch of channel 8 is set to on | ||
Output data
Data byte 1
Data byte 1 sets the outputs in automatic mode.
Bit | Name | Description | |
|---|---|---|---|
0 | setCh1 | 1bin | Output 1 is set. |
1 | setCh2 | 1bin | Output 2 is set. |
... | ... | ... | |
7 | setCh8 | 1bin | Output 8 is set. |
Data byte 2
Has no function (reserved) in process data mode, but is used for register communication.
Data byte 3
Data byte 3 sets the LEDs of the channels to green.
Bit | Name | Description | |
|---|---|---|---|
0 | LED 1 green | 1bin | LED 1 lights up green |
1 | LED 2 green | 1bin | LED 2 lights up green |
... | ... | ... | |
7 | LED 8 green | 1bin | LED 8 lights up green |
Data byte 4
Data byte 4 sets the LEDs of the channels to yellow.
Bit | Name | Description | |
|---|---|---|---|
0 | LED 1 green | 1bin | LED 1 lights up yellow |
1 | LED 2 green | 1bin | LED 2 lights up yellow |
... | ... | ... | |
7 | LED 8 green | 1bin | LED 8 lights up yellow |