Beckhoff KL403 Series Documentation page 37

• R0 to R4: reserved
• R5: Raw DAC value (Y_dac)
The 12-bit value transferred to the D/A converter is called raw DAC value. It is calculated from the
process data via the manufacturer and user scaling.
• R6 to R7: reserved
R8 to R15: Registers in the internal ROM of the terminal
The type and system parameters are hard programmed by the manufacturer, and the user can read them
but cannot change them.
• R8: Terminal type
The terminal type in register R8 is needed to identify the terminal.
• R9: Software version (X.y)
The software version can be read as a string of ASCII characters.
• R10: Data length
R10 contains the number of multiplexed shift registers and their length in bits.
The Bus Coupler sees this structure.
• R11: Signal channels
Related to R10, this contains the number of channels that are logically present. Thus for example a
shift register that is physically present can perfectly well consist of several signal channels.
• R12: Minimum data length
The particular byte contains the minimum data length for a channel that is to be transferred. If the MSB
is set, the control and status byte is not necessarily required for the terminal function and is not
transferred to the control, if the Bus Coupler is configured accordingly.
• R13: Data type register
Data type register
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x11
0x12
0x13
0x14
0x15
0x16
• R14: reserved
• R15: Alignment bits (RAM)
The alignment bits are used to place the analog terminal in the Bus Coupler on a byte boundary.
R16 to R30: Manufacturer parameter area (SEEROM)
The manufacturer parameters are specific for each type of terminal. They are programmed by the
manufacturer, but can also be modified by the controller. The manufacturer parameters are stored in a serial
EEPROM in the terminal, and are retained in the event of voltage drop-out.
These registers can only be altered after a code word has been set in R31 [} 38].
KL403x
Meaning
Terminal with no valid data type
Byte array
Structure 1 byte n bytes
Word array
Structure 1 byte n words
Double word array
Structure 1 byte n double words
Structure 1 byte 1 double word
Structure 1 byte 1 double word
Byte array with variable logical channel length
Structure 1 byte n bytes with variable logical channel length (e.g. 60xx)
Word array with variable logical channel length
Structure 1 byte n words with variable logical channel length
Double word array with variable logical channel length
Structure 1 byte n double words with variable logical channel length
Version: 4.1
Access from the user program
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