Beckhoff KL3001, Documentation

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Access from the user program
KL3001, KL3002 35 Version: 4.2
• R7: Command register
High-Byte_Write = function parameter
Low-Byte_Write = function number
High-Byte_Read = function result
Low-Byte_Read = function number
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 Meaning
0x00 Terminal with no valid data type
0x01 Byte array
0x02 Structure 1 byte n bytes
0x03 Word array
0x04 Structure 1 byte n words
0x05 Double word array
0x06 Structure 1 byte n double words
0x07 Structure 1 byte 1 double word
0x08 Structure 1 byte 1 double word
0x11 Byte array with variable logical channel length
0x12 Structure 1 byte n bytes with variable logical channel length (e.g. 60xx)
0x13 Word array with variable logical channel length
0x14 Structure 1 byte n words with variable logical channel length
0x15 Double word array with variable logical channel length
0x16 Structure 1 byte n double words with variable logical channel length
• 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 [ } 36] .