Read/write function block data
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Table 73: Operand overview
0
Table 74: Index 0 – Bit IO
Index
(hex)
Operand Value Read Write
00 Bit IO Table 74 ×
01 Mode/Parameter – – –
02 Upper setpoint SH In integer range from
–2147483648 to
+2147483647
× c
1
03 Lower setpoint SL × c
1
04 Preset actual value SV × c
1
05 Actual value in Run mode 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 5 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
SE
2
RE
3
FB output Data 3 – – – – ZE
4
CY
5
FB
6
OF
7
1) Counter enable
2) Transfer preset actual value on rising edge
3) Reset actual value to zero
4) Zero: Status 1 if the value of the function block output QV (the
counter status) equals zero
5) Carry: Status 1 if the value range is exceeded
6) Fall below: Status 1 if the actual value lower setpoint
7) Overflow: Status 1 if the actual value lower setpoint
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