Pavone Sistemi DAT 500, Technical Manual

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FUNCTION 2: READ INPUT STATUS
QUERY
Address Function 1st Input address Nr of Input 2 byte Tot.byte
A 0x02 0x0000 0x0008 CRC 8
RESPONSE
Address Function Nr of bytes Input status 2 byte Tot.byte
A 0x02 0x01 0x00 CRC 5+1*N°byte
Input Status: 1 bit for Input. 1st Input address = LSB of Input status. (1 = On, 0 = Off).
FUNCTION 3: READ HOLDING REGISTERS
QUERY
Address Function
1st register
address
Nr. of registers 2 byte Tot.byte
A 0x03 0x0000 0x0002 CRC 8
RESPONSE
Address Function
Nr. of
bytes
1st
register
2 nd
register
2 byte Tot.byte
A 0x03 0x04 0x0064 0x00C8 CRC 3+2*N°r2
FUNCTION 4: READ INPUT REGISTERS
QUERY
Address Function
1st Input
address
Nr. of registers 2 byte Tot.byte
A 0x04 0x0000 0x0001 CRC 8
RESPONSE
Address Function
Nr. of
bytes
1st regi-
ster
2 byte Tot.byte
A 0x04 0x02 0x0064 CRC 3+2*N°re2
FUNCTION 5: FORCE SINGLE COIL
QUERY
Address Function
Output
address
Output status 2 byte Tot.byte
A 0x05 0x0000 0xFF00 CRC 8
RESPONSE
Address Function
Output
address
Output status 2 byte Tot.byte
A 0x05 0x0000 0xFF00 CRC 8
Output status: (FF00 = On, 0000 = Off).
The response contains an echo of the query after the command has been executed