Ix350_02b_oi_e.doc / Mai-18
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6.
Appendix
6.1.
Data readout via serial interface
All codes shown in the parameter SERIAL VALUE are available for serial readout by PC or PLC. For
communication the monitors use the Drivecom Protocol according to ISO 1745. All protocol details can
be found in our manual SERPRO which is available for download from our homepage
www.motrona.com.
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
