Read/write function block data
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MN05013001E
127
Table 58: Operand overview
Table 59: Index 0 – Bit IO
Table 60: Index 1 - Mode
Index
(hex)
Operand
Read
Write
00
Bit IO,
J
Table 59
×
01
Mode,
J
Table 60
×
02
Source range 1
I1
×
c
1
03
Target range 2
I2
×
c
1
04
Number of elements to
compare: 8 (max. 192 bytes)
NO
×
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 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
0
FB input Data 1
– – – – –
–
–
EN
1
FB output Data 3
– – – – EQ
2
E3
3
E2
4
E1
5
1) Activates the function block on status 1.
2) Status 1 if the data ranges are equal; status 0 if not equal
Error outputs
3) Status 1 if the number of elements exceeds the source or target
range.
4) Status 1 if the source and target range overlap.
5) Status 1 if the source or target range are outside of the available
marker range (offset error)
Mode
Data 1 (hex)
Operating mode
02
Compare (internal EZ status signal
for Block Compare mode)
