S5-115F Manual Blocks
6 Blocks
You can use the following to support the user program in the safety-related S5-115F:
• Integral blocks
• Loadable standard function blocks
• Function blocks generated by the user (subject to acceptance test)
Some standard function and organization blocks are integrated in the operating system of the
central processing units. These integral blocks are programmed in machine code and therefore
execute at high speed. They do not occupy user memory. Integral blocks are called in the same way
as other blocks in the user program and can usually be interrupted by process interrupts. See 6.1
for further information on integral function blocks.
Loadable standard function blocks are supplied on diskette and are loaded into the user memory
of the CPU. 6.3 describes the use of loadable function blocks.
Table 6-1. Overview of Integral Blocks
Call
Length
in Words
Multiplies 16-bit binary numbers
Divides 16-bit binary numbers
< 2.6
< 1.17
10
Execution
Time
in msec.
FB
FB
Block
Type No. Name
Function
241
242
243
Converts BCD-coded nos. (4-tetrads)
Converts 16-bit fixed-point numbers
COD: 16
MUL: 16
DIV : 16
COD: B4
FB
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240 5
6
< 0.8
< 1.3
PID control algorithmOB 251 1.7
Updating of user timers
Interrupt synchronization
SINEC L1 synchronization
Programmer synchronization
3FB 254 AGF : SYNC (2 to 7 msec.)+
40 µsec. x Y **
2 msec. + OB 2- /
OB 13 timer
3
2
Mailbox transfer for two-channel SINEC L1
LAN
AGF : MBXTFB 253 3 < 0.8
Frame transfer to and from the CP 523 AGF : BLUEFB 252 8 Send
Block 1: 1.4
32 blocks: 10
Receive
1 block: 2
32 blocks: 20
FB 250
251
AGF : ANEI 17 5* Reads in analog value
FB AGF : ANAU 9 6 Outputs analog value
Depassivation of I/O modules3 to 15***5FB 255 AGF : DEPA
* This value is sometimes exceeded by the discrepancy time for analog values
** Y = Number of user timers.
*** Plus processing time of the test slice ( 10.4)
EWA 4NEB 811 6149-02
6-1
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