Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 145)

Read/write function block data
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Table 75: Operand overview
Table 76: Index 0 – Bit IO
Index
(hex) Operand Read Write
00 Bit IO, Table 76
×
01 Mode/Parameter – –
02 Comparison value I1 × c 1
03 Comparison value I2
×
c 1
1) The value can only be written if it is assigned to a constant in
the program.
J
The data for index 2 and 3 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 – – – – GT 1 EQ 2 LT 3
1) greater than: Status 1 if the value at I1 is greater than value at I2
(I1 > I2)
2) equal: Status 1 if the value at I1 is equal to value at I2 (I1 = I2)
3) less than: Status 1 if the value at I1 is less than value at I2
(I1 < I2)