Siemens 440 Free function blocks FFB, P2800 = P2801 = P2802 =, Enable FFBs, Activate FFBs

Issue 10/06 6 Commissioning

6.4.18.11 Free function blocks (FFB)

P2800 =...

P2801 =...

P2802 =...

Enable FFBs 0

Parameter P2800 is used to activate all free function blocks (generally, P2800 is set to 1).

Possible settings:
0	Inhibited
1	Enabled
Activate FFBs		0.0

Parameter P2801 is used to individually enable (activate) the free function blocks P2801[0] to P2801[16] (P2801[x] > 0).

Further, parameters P2801 and P2802 are used to define the chronological sequence of all of the function blocks. The table below indicates that the priority increases from left to right and from bottom to top.

Possible settings:

0Inactive

1Level 1

2Level 2

3Level 3

Example:

P2801[3] = 2, P2801[4] = 2, P2802[3] = 3, P2802[4] = 2 FFBs are calculated in the following sequence: P2802[3], P2801[3] , P2801[4], P2802[4]

The active function blocks are calculated every 132 ms.

Activate FFBs

Parameter P2802 is used to individually enable (activate) the free function blocks P2802[0] to P2802[13] (P2802[x] > 0).

Possible settings:

0Inactive

1Level 1

2Level 2

3Level 3

low

Priority 2

high

Level

3

1

Level

2

Priority

Level

1

Inactive

0

[13] CMP 2

[12] CMP 1

[11] DIV 2

[10] DIV 1

[9] MUL 2

[8] MUL 1

[7] SUB 2

[6] SUB 1

[5] ADD 2

[4] ADD 1

[3] Timer 4

[2] Timer 3

[1] Timer 2

[0] Timer 1

[16] RS-FF 3

[15] RS-FF 2

[14] RS-FF 1

[13] D-FF 2

[12] D-FF 1

[11] NOT 3

[10] NOT 2

[9] NOT 1

[8] XOR 3

[7] XOR 2

[6] XOR 1

[5] OR 3

[4] OR 2

[3] OR 1

[2] AND 3

[1] AND 2

[0] AND 1

low

P2802

P2802

P2802

P2802

P2802

P2802

P2802

P2802

P2802

P2802

P2802

P2802

P2802

P2802

P2801

P2801

P2801

P2801

P2801

P2801

P2801

P2801

P2801

P2801

P2801

P2801

P2801

P2801

P2801

P2801

P2801

MICROMASTER 440	67
Operating Instructions (Compact)