DE-3000 IOI 7-17
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Query:
NN 20 KP CRC CRC
Where:
NN = node number, 20 = KP function code, KP is the single byte “Key Press”
from the table below, CRC CRC = two byte Modbus RTU CRC.
Key Press Table
00 = NONE ( no keypress, returns current display )
01 = CANCEL TIMERS
02 = TEST
03 = RESET
04 = STOP
05 = VIEW
06 = NEXT
07 = UP/UNITS
08 = VIEW CHAN
09 = F1
10 = RIGHT/TENS
11 = ENTER
12 = LEFT/TENS
13 = F2
14 = MENU
15 = DOWN/UNITS
16 = ESC
Response:
NN 20 88 (20 bytes 1st line of display) CR LF (20 bytes 2nd line) CR LF (20 bytes
3rd line) CR LF (20 bytes 4th line) CR LF CRC CRC
Where:
NN = node number, 20 = KP function code, 88 = number of bytes to follow, CR =
Carriage Return, LF = Linefeed, 4 20-byte ASCII blocks that is the display, CRC
CRC = two byte Modbus RTU CRC
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