Process image
In the process image, the KL5151/KS5151 is represented with 5 bytes of input and output data. These are organized as follows:
Format | Input data | Output data |
|---|---|---|
Byte | SB | CB |
Double word | DataIN | DataOUT |
Key
SB: Status byte
CB: Control byte
DataIN: The current value of the 32-bit counter, or the one stored in the latch (the selection is made with bit CB1.1 of the control byte)
DataOUT: Value specified for the 32 bit counter
- Please refer to the Mapping page for the allocation of the bytes and words to the addresses of the controller.
- The meaning of the control and status bytes is explained on the Control and Status bytes page.
 | No compact process image Operation of the KL5151/KS5151 with compact process image (without control and status bytes) is not possible, since the control and status bytes are required for useful process data operation of the terminal. Even if you adjust your Bus Coupler to the compact process image, the KL5151/KS5151 will still be represented with its complete process image! |