Mapping
Each Bus Terminal is mapped in the Bus Coupler. In the delivery state, this mapping occurs with the default settings of the Bus Coupler for this terminal. The default setting can be changed with the KS2000 configuration software or with a master configuration software (e.g. TwinCAT System Manager or ComProfibus).
If the terminals are complexly evaluated, they occupy memory space in the input and output process image.
The following tables provide information about the terminal mapping, depending on the conditions set in the Bus Coupler.
Default mapping for:
Lightbus, EtherCAT, Ethernet and Bus Terminal Controller (BCxxxx, BXxxxx)
|
Conditions |
Word offset |
High byte |
Low byte |
|---|---|---|---|
|
Complex evaluation: yes Motorola format: no Word alignment: yes |
0 |
reserved |
Ch0 CB/SB |
|
1 |
Ch0 D1 |
Ch0 D0 | |
|
2 |
r reserved |
Ch1 CB/SB | |
|
3 |
Ch1 D1 |
Ch1 D0 |
|
Conditions |
Word offset |
High byte |
Low byte |
|---|---|---|---|
|
Complex evaluation: yes Motorola format: yes Word alignment: yes |
0 |
reserved |
Ch0 CB/SB |
|
1 |
Ch0 D0 |
Ch0 D1 | |
|
2 |
reserved |
Ch1 CB/SB | |
|
3 |
Ch1 D0 |
Ch1 D1 |
Key
- Complex evaluation:
The terminal is mapped with control and status byte. - Motorola format:
Motorola or Intel format can be set. - Word alignment:
The terminal is at word limit in the Bus Coupler. - Ch n SB:
status byte for channel n (appears in the input process image). - Ch n CB:
control byte for channel n (appears in the output process image). - Ch n D0:
channel n, data byte 0 (byte with the lowest value) - Ch n D1:
channel n, data byte 1 (byte with the highest value) - reserved:
This byte occupies process data memory, although it is not used. - "-":
This byte is not used or occupied by the terminal.
Default mapping for:
PROFIBUS, Interbus
|
Conditions |
Word offset |
High byte |
Low byte |
|---|---|---|---|
|
Complex evaluation: no Motorola format: yes Word alignment: don't care |
0 |
Ch0 D0 |
Ch0 D1 |
|
1 |
Ch1 D0 |
Ch1 D1 | |
|
2 |
Ch2 D0 |
Ch2 D1 | |
|
3 |
Ch3 D0 |
Ch3 D1 |
|
Conditions |
Word offset |
High byte |
Low byte |
|---|---|---|---|
|
Complex evaluation: yes Motorola format: no Word alignment: no |
0 |
Ch0 D0 |
Ch0 CB/SB |
|
1 |
Ch1 CB/SB |
Ch0 D1 | |
|
2 |
Ch1 D1 |
Ch1 D0 | |
|
3 |
Ch2 D0 |
Ch2 CB/SB | |
|
4 |
Ch3 CB/SB |
Ch2 D1 | |
|
5 |
Ch3 D1 |
Ch3 D0 |
|
Conditions |
Word offset |
High byte |
Low byte |
|---|---|---|---|
|
Complex evaluation: yes Motorola format: yes Word alignment: no |
0 |
Ch0 D1 |
Ch0 CB/SB |
|
1 |
Ch1 CB/SB |
Ch0 D0 | |
|
2 |
Ch1 D0 |
Ch1 D1 | |
|
3 |
Ch2 D1 |
Ch2 CB/SB | |
|
4 |
Ch3 CB/SB |
Ch2 D0 | |
|
5 |
Ch3 D0 |
Ch3 D1 |
Default mapping for:
CANopen, CANCAL, DeviceNet, ControlNet, Modbus, RS232, RS485
|
Conditions |
Word offset |
High byte |
Low byte |
|---|---|---|---|
|
Complex evaluation: no Motorola format: no Word alignment: don't care |
0 |
Ch0 D1 |
Ch0 D0 |
|
1 |
Ch1 D1 |
Ch1 D0 | |
|
2 |
Ch2 D1 |
Ch2 D0 | |
|
3 |
Ch3 D1 |
Ch3 D0 |