Read/write function block data
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Table 27: Operand overview
Table 28: Index 00 – Parameters
Example:
Data1 (Byte 5) = 0x07
Meaning:
The values appear in the Parameter menu. The counter is
used in the mode of the frequency meter. The counter setpoint
1 is not assigned to a constant and cannot therefore be written
to.
Index
(hex) Operand Read Write
00 Parameters JTable28 ×
01 Control byteJTable 29 ×
02 Actual value S12×c1
03 Counter setpoint 2 S22×c1
1) The value can only be written if it is assigned to a constant in the
program.
2) A 16-bit value is transferred in data bytes Data 1 –Data 2. It should be
remembered that Data 1 is the low byte and Data 2 the high byte.
Meaning Bit 7 6 5 4 3 2 1 0
Appears in the parameter menu
Yes/no 0/1
Counter mode
FB not used 0 0
Up/down counter (N) 0 1
High-speed up/down counter (H) 1 0
Frequency counter (F) 1 1
Use as constant and therefore can be written to
Counter setpoint S1 0/1
Unused bits – – – –