Balluff BAE SC-TL-F03, User Manual

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37
Appendix
Data readout via serial interface
The free operator software configuration software is available at:
https://www.balluff.com
All codes shown in the parameter SERIAL VALUE are available for serial readout by PC or
PLC. The communication of Balluff devices is based on the Drivecom protocol according
to ISO 1745 or the Modbus RTU protocol.
To request for a data transmission you must send the following request string to the
converter:
EOT AD1 AD2 C1 C2 ENQ
EOT = control character (Hex 04)
AD1 = unit address, High Byte
AD2 = unit address, Low Byte
C1 = register code, High Byte
C2 = register code, Low Byte
ENQ = control character (Hex 05)
The following example shows the request string for readout of the actual input frequency
of a monitor (Code=1) from a unit with unit address 11:
ASCII-
Code:
ASCII-Code: EOT 1 1 : 1 ENQ
Hex-Code: Hexadecimal: 04 31 31 3A 31 05
Binary-
Code:
Binary:
0000
0100 0011
0001 0011
0001 0011
1010 0011
0001 0000
0101
After a correct request, the unit will respond:
STX C1 C2 xxxxx ETX BCC
STX = control character (Hex 02)
C1 = register code, High Byte
C2 = register code, Low Byte
xxxxx = readout data
ETX = control character (Hex 03)
BCC = block check character