Hatteland Display 26 inch - HD 26T21 MMC (Widescreen) - Manual (Page 22)

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Serial/Ethernet Communication (SCOM) Interface
IND100084-14
"TYP" - Type/Model Number Query
This query is sent to the unit in order to identify the unit type by its model number / part number. No data shall be sent
with this query.
The unit will reply to this command with an ACK attention code. The DATA field should be translated to an ASCII text
string which indicate the specified Type/Model Number, e.g: "HD17T21MMCMJDOABA".
FYI: Which translates to "HD 17T21 MMC" (http://www.hatteland-display.com/panel_computer_hd17t21mmc.php) with
a configuration added to it by using the letters "-MJD-OABA". The meaning of "-MJD-OABA" can only be found in the
description field of invoice documents and service documents. In this example the exact description for the unit is:
"17.0" MMC IntelQM57 CEL 1.86GHz 2GBRAM 250GBHDD OSNone ACDC Bonded Black GDC Buzzer"
Example:
Command to retrieve Type/Model Number
0x07 0xFF 0x54 0x59 0x50 0x00 0xFC
Acknowledge Type/Model Number "HD17T21MMCMJDOABA":
0x06 0xFF 0x54 0x59 0x50 0x11 0xEC 0x48 0x44 0x31 0x37
0x54 0x32 0x31 0x4D 0x4D 0x43 0x4D 0x4A 0x44 0x4F 0x41
0x42 0x41 0x89
"QDU" - QM57 Chipset Duplex Mode
This command sets the half or full duplex mode for the external physical RS-422 / RS-485 port on a MMC unit.
0x00 Half Duplex Mode
0xFF Full Duplex Mode