Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 135)

Read/write function block data
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Table 64: Operand overview
Table 65: Index 0: Bit IO
Table 66: Index 1 - Mode
Index
(hex) Operand Read Write
00 Bit IO, J Table 65
×
01 Mode, J Table 66 ×
02 First operand I1 × c 1
03 Second operand I2
×
c 1
04 Operation result QV
×
1) The value can only be written if it is assigned to a constant in the
program.
J
The data for index 2 to 4 is transferred as a 32-bit value in
Intel format (Data 1 – Low Byte to Data 4 – High Byte).
Bit 7 6 5 4 3 2 1
FB output Data 3 – – – – – – ZE 1
1) Status 1 if the value of the function block output QV (the
operation result) equals zero
Data 1
(hex)
00 AND And sequence
01 OR Or sequence
02 XOR Exclusive Or sequence
03 NET Inverts the individual bits of the value at I1.
The inverted value is represented as a
signed decimal value.