Hatteland Display 19 inch - JH 19T14 MMC - Manual (Page 14)

14
Serial Communication (SCOM) Interface
Communication Interface
IND100084-12
“MAN” - Manufacturer ID
This command is sent to the unit to request Manufacturer ID. No data shall be sent with this command. The unit will
reply to this command with an ACK attention code. The DATA field indentify the manufacturer in a text string.
Example:
Query Manufacturer ID:
0x07 0xFF 0x4D 0x41 0x4E 0x00 0x1D
Acknowledge Manufacturer ID “JHD”:
0x06 0xFF 0x4D 0x41 0x4E 0x03 0x1B 0x4A 0x48 0x44 0x29
“POT” - Potentiometer Control
The unit may allow the backlight to be controlled by the local control (potentiometer/keypad) mounted on the front of the
unit, by the remote control or by the combination of the two. This is valid for the brilliance buttons if no external
potentiometer is connected. This command provides means to enable/disable the local control. LEN = one data byte.
0x00 Disables the local control. Backlight controlled only by the remote control.
0xFF Enables the local control. Backlight is controlled by both the remote control and the local control. (Default)
Note: In this setting, with the BRT command at 100%, the local control will have full dimming range.
This is the initial setting when a unit is powered 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 resulting control setting. 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 Set Local Control Disable (0x00):
0x07 0xFF 0x50 0x4F 0x54 0x01 0x05 0xFF 0x00
Acknowledge Local Control Disable (0xFF):
0x06 0xFF 0x50 0x4F 0x54 0x01 0x06 0xFF 0x00