Mapping
The Bus Terminals occupy addresses within the process image of the controller. The assignment of process data (input and output data) and parameterization data (control and status bytes) to the control addresses is called mapping. The type of mapping depends on:
- the fieldbus system used
- the terminal type
- the parameterization of the Bus Coupler (conditions) such as
- Intel or Motorola format
- word alignment switched on or off
The Bus Couplers (BKxxxx, LCxxxx) and Bus Terminal Controllers (BCxxxx, BXxxxx) are supplied with certain default settings. The default setting can be changed with the KS2000 configuration software or with a master configuration software (e.g. TwinCAT System Manager or ComProfibus).
The following tables show the mapping depending on different conditions. For information about the contents of the individual bytes please refer to the pages Process image and Control and Status Byte.
Complete evaluation
For complete evaluation, the analog input terminals occupy addresses in the input and output process image. Control and status bytes can be accessed. The terminal always occupies 12 bytes of input data and 12 bytes of output data. The KL6583 itself does not occupy any K-bus data, since it is addressed via the process data of the KL6581.
| Address | Input data | Output data | ||
---|---|---|---|---|---|
Requirements | Word offset | High-Byte | Low-Byte | High-Byte | Low-Byte |
Complete evaluation: any | 0 | CNODE | SB | CNODE | CB |
1 | DB0 | ORG | DB0 | ORG | |
2 | DB2 | DB1 | DB2 | DB1 | |
3 | ID0 | DB3 | ID0 | DB3 | |
4 | ID2 | ID1 | ID2 | ID1 | |
5 | STATUS | ID3 | STATUS | ID3 |
Key
Complete evaluation: In addition to the process data, the control and status bytes are also mapped into the address space.
Motorola format: Motorola or Intel format can be set.
Word alignment: In order for the word address range to commence at a word boundary, empty bytes are inserted into the process image as appropriate.
SB : Status byte (appears in the input process image)
CB : Control byte (appears in the output process image)