Hatteland Display 26 inch - HD 26T21 MMC (Widescreen) - Manual (Page 14)

14
Serial/Ethernet Communication (SCOM) Interface
IND100084-14
"BZZ" - Buzzer Control
This command is sent to the unit to control buzzer on/off if there is a buzzer present. LEN = one data byte.
0x00 Turn the buzzer off
0xFF Turn the buzzer on
If the data checksum is valid, the unit will reply to this command with an ACK attention code. The DATA field will
indicate the buzzer state. If an invalid data checksum was received and the message was not broadcast and RS-485,
the unit will reply with a NAK attention code and the current control setting.
Example:
Command to set Buzzer Enable: 0xFF
0x07 0xFF 0x42 0x5A 0x5A 0x01 0x02 0xFF 0x00
Acknowledge Buzzer status was set to Enable: 0xFF
0x06 0xFF 0x42 0x5A 0x5A 0x01 0x03 0xFF 0x00
"DL?" - Query available ECDIS packages
This command will query the unit in order to aquire how many packets (1 packet = 32 bytes) are in the ECDIS memory
table (if available) that are available for download. Packet counting starts from 0, so a response of 0x03 is naturally 4
actual packets (4*32 = 128 bytes as ASCII text). If packets end up as example 42.34, it will always be rounded up-
wards, i.e. 43 packets.
The "DL?" command does not indicate which memory slot was used to store the ECDIS table, so please review the Slot/ECDIS condition table
below to achieve a successfull "DLN" query (see next page). MMD units have 2 memory slots available, while STD and MMC has only 1 memory
slot available. Please note that the reference to DVI and VGA refer how it was calibrated in factory, by using either DVI or VGA physical signal
input and doing measures to ensure correct color representation, in which end (if ordered), would be uploaded to the appropriate memory slot.
Product Range Slots Available OSD ID OSD Setting
Maritime Multi Display (MMD) None 2 "Color Mode Settings / Gamma / No Calibration" to verify/change
VGA 0 "Color Mode Settings / Gamma / Calibration VGA*" to verify/change
DVI 1 "Color Mode Settings / Gamma / Calibration DVI*" to verify/change
Standard Industrial Display (STD) None 2 No Calibration
Internal (VGA) 1 No OSD setting available to verify/change
Maritme Multi Computer (MMC) Internal (DVI/LVDS) 2 No Calibration
Internal (DVI/LVDS) 0 No OSD setting available to verify/change
*Please review the INB100519-1 document on how to correctly set/verify the Color Mode Settings / Gamma.
http://www.hatteland-display.com/pdf/manual/inb100519-1_usermanual_mmd_seriesx.pdf
Now, by looking at OSD ID reference above and verify that the unit (especially MMD) are set to the correct Calibration
setting via the OSD, you can perform a successfull request of available packets for download (if any).