Hatteland Display 19 inch - JH 19T14 MMC - Manual (Page 16)

16
Serial Communication (SCOM) Interface
Communication Interface
IND100084-12
“TMP” - Temperature Sensor Query
The unit features a sensor that measures the temperature inside. The unit will reply to this command with an ASCII
string indication the temperature in Celcius degree (°C).
0x52 "R" = Read current temperature
0x48 "H" = Read Temperature Histogram
The histogram is a table for temperature -55 to 125 °C and be divided to 12 parts. The temperature range for each part
is 16 °C and each part use two bytes.
Example:
Command Read Current Temperature “R”:
0x07 0xFF 0x54 0x4D 0x50 0x01 0x07 0x52 0xAD
“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 will be set to an text string to indicate
the specified Type/Model Number, e.g: “JH23T01MMD-A1”.
Example:
Command to retrieve Type/Model Number
0x07 0xFF 0x54 0x59 0x50 0x00 0xFC
Acknowledge Type/Model Number “JH20T03”:
0x06 0xFF 0x54 0x59 0x50 0x07 0x1A 0x4A 0x48 0x32 0x30 0x54 0x30 0x33 0x54