Mapping in the Bus Coupler
As already described in the Terminal Configuration section, each Bus Terminal is mapped in the Bus Coupler. This mapping is usually done with the default setting in the Bus Coupler / Bus Terminal. The KS2000 configuration software or a master configuration software (e.g. ComProfibus or TwinCAT System Manager) can be used to change this default setting.
If the terminals are fully evaluated, they occupy memory space in the input and output process image.
The following tables provide information about how the terminals map themselves in the Bus Coupler, depending on the parameters set.
The KL5051 is mapped into the bus coupler depending on the set parameters. The KL5051 is mapped with 6 bytes of input data and 6 bytes of output data.
Default mapping for: CANopen, CANCAL, DeviceNet, ControlNet, RS232 and RS485 couplers
Conditions | Word offset | High byte | Low byte |
|---|---|---|---|
Complete evaluation: any | 0 | D1 | CB/SB-0 |
1 | CB/SB-3 | D2 | |
2 | D5 | D4 | |
3 | - | - |
Default mapping for: Profibus and Interbus Coupler
Conditions | Word offset | High byte | Low byte |
|---|---|---|---|
Complete evaluation: any | 0 | D2 | CB/SB-0 |
1 | CB/SB-3 | D1 | |
2 | D4 | D5 | |
3 | - | - |
Default mapping for: Lightbus, Ethernet & EtherCAT coupler and Bus Terminal Controller (BCxxxx, BXxxxx)
Conditions | Word offset | High byte | Low byte |
|---|---|---|---|
Complete evaluation: any | 0 | - | CB/SB-0 |
1 | D2 | D1 | |
2 | - | CB/SB-3 | |
3 | D5 | D4 |
Conditions | Word offset | High byte | Low byte |
|---|---|---|---|
Complete evaluation: any | 0 | - | CB/SB-0 |
1 | D1 | D2 | |
2 | - | CB/SB-3 | |
3 | D4 | D5 |
Key
Complete evaluation | The terminal is mapped with control and status byte. |
Motorola format | Motorola or Intel format can be set. |
Word alignment | The terminal is positioned on a word boundary in the Bus Coupler. |
CB-0(A0) | Control byte (appears in the process image of the outputs). |
SB-0(E0) | Status byte (appears in the process image of the inputs). |
CB-3(A3) | Control byte (appears in the process image of the outputs). |
SB-3(E3) | Status byte (appears in the process image of the inputs). |
D1, D2, D4, D5 = A1, E1, A2, E2, A4, E4, A5, E5 | |
"-" | This byte is not used or occupied by the terminal. |