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 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

Control and status bytes can be accessed.

Complete evaluation in Intel format

Default mapping for CANopen, CANCAL, DeviceNet, ControlNet, Modbus, RS232 and RS485 coupler.

Parameterization of the Bus Coupler	Address	Input data		Output data
Parameterization of the Bus Coupler	Word offset	High byte	Low byte	High byte	Low byte
Complete evaluation: n/a Motorola format: no Word alignment: no	0	DataIN D0	SB	DataOUT D0	CB
	1	DataIN D2	DataIN D1	DataOUT D2	DataOUT D1
	2	reserved	DataIN D3	reserved	DataOUT D3

Complete evaluation in Motorola format

Parameterization of the Bus Coupler	Address	Input data		Output data
Parameterization of the Bus Coupler	Word offset	High byte	Low byte	High byte	Low byte
Complete evaluation: n/a Motorola format: yes Word alignment: no	0	DataIN D3	SB	DataOUT D3	CB
	1	DataIN D1	DataIN D2	DataOUT D1	DataOUT D2
	2	reserved	DataIN D0	reserved	DataOUT D0

Complete evaluation in Intel format with word alignment

Default mapping for EtherCAT, Lightbus and Ethernet coupler as well as Bus Terminal Controllers (BCxxxx, BXxxxx).

Parameterization of the Bus Coupler	Address	Input data		Output data
Parameterization of the Bus Coupler	Word offset	High byte	Low byte	High byte	Low byte
Complete evaluation: n/a Motorola format: no Word alignment: yes	0	reserved	SB	reserved	CB
	1	DataIN D1	DataIN D0	DataOUT D1	DataOUT D0
	2	DataIN D3	DataIN D2	DataOUT D3	DataOUT D2

Complete evaluation in Motorola format with word alignment

Parameterization of the Bus Coupler	Address	Input data		Output data
Parameterization of the Bus Coupler	Word offset	High byte	Low byte	High byte	Low byte
Complete evaluation: n/a Motorola format: yes Word alignment: yes	0	reserved	SB1	reserved	CB1
	1	DataIN D2	DataIN D3	DataOUT D2	DataOUT D3
	2	DataIN D0	DataIN D1	DataOUT D0	DataOUT D1

Legend

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)

DataIN D0: Input double word, lowest significant data byte
DataIN D1: Input double word, ...
DataIN D2: Input double word, ...
DataIN D3: Input double word, highest significant data byte

DataOUT D0: Output double word, lowest significant data byte
DataOUT D1: Output double word, ...
DataOUT D2: Output double word, ...
DataOUT D3: Output double word, highest significant data byte

reserved: This byte occupies process data memory, although it has no function.

Compact evaluation

	No compact process image Operation of the KL5151-0000 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 KL5151-0000 will still be represented with its complete process image!