Festo CPX Electronic Manual page 188

B. Parameters and data of the CPX terminal
Module data: Series number
Function no. 784 + m * 4 + 0
784 + m * 4 + 1
784 + m * 4 + 2
784 + m * 4 + 3
Description Specifies the series number of the module. In byte 0 one nibble (4 bits) contains
the year and the other nibble contains the month of the series (hexadecimal
coding). Of bytes 1...3 each nibble contains a figure of the series number (BCD
coded
1)
BCD = binary coded decimal number (example see following table)
Function no.
784 + m * 4 + 0
784 + m * 4 + 1
784 + m * 4 + 2
784 + m * 4 + 3
1)
Example: Series number 1C654321
2)
0001 (1) = year 2001; 0010 (2) = year 2002 etc.
3)
0001 (1) = January; 0010 (2) = February ... 1011 (B) = November; 1100 (C) = December
Tab. B/61: Series number
B−46
(byte 0)
(byte 1)
(byte 2)
(byte 3)
1)
).
Bit number
7 6 5 4 3
Nibble Nibble
2)
Year Month
100,000 10,000
1 000 100
10 1
m = module number (0...47)
Example
2 1 0 7 6
Nibble
3)
0 0
0 1
0 1
0 0
1)
5 4 3 2 1
Nibble
0 1 1 1 0
1 0 0 1 0
0 0 0 0 1
1 0 0 0 0
Festo P.BE−CPX−SYS−EN en 0503b
0
0
1
1
1