Beckhoff KL320 Series, Documentation

Page: 49 / 54

Access from the user program
KL320x 49 Version: 4.4
5.7.2 Example 1
Reading of register 8 in the BK2000 with a KL3202 and the end terminal:
If the following bytes are transferred from the control to the terminal,
Byte Byte 3 Byte 2 Byte 1 Byte 0
Name DataOUT 1 DataOUT 0 Not used Control byte
Value 0xXX 0xXX 0xXX 0x88
the terminal returns the following type identifier (0x0C82 corresponds to unsigned integer 3202).
Byte Byte 3 Byte 2 Byte 1 Byte 0
Name DataIN 1 DataIN 0 Not used Status byte
Value 0x0C 0x82 0x00 0x88
5.7.3 Example 2
Writing of register 31 in the BK2000 with an intelligent terminal and the end terminal:
If the following bytes (code word) are transferred from the control to the terminal,
Byte Byte 3 Byte 2 Byte 1 Byte 0
Name DataOUT 1 DataOUT 0 Not used Control byte
Value 0x12 0x35 0xXX 0xDF
the code word is set, and the terminal returns the register address with bit 7 for register access as
acknowledgement.
Byte Byte 3 Byte 2 Byte 1 Byte 0
Name DataIN 1 DataIN 0 Not used Status byte
Value 0x00 0x00 0x00 0x9F