SAFETY MANUAL - Tuv-fs.com
SAFETY MANUAL - Tuv-fs.com
SAFETY MANUAL - Tuv-fs.com
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<strong>SAFETY</strong> <strong>MANUAL</strong><br />
5. PREVIOUSLY ASSESSED FUNCTIONS<br />
The following list shows those function blocks that have been proven safe to use in<br />
Certified systems.<br />
Boolean<br />
(>=1) Logical Or (2 to 16 inputs)<br />
(&)<br />
Logical And (2 to 16 inputs)<br />
( ) Inverted Line (Boolean inversion)<br />
(=1) Exclusive Or<br />
(RS)<br />
(SR)<br />
(ftrig)<br />
(rtrig)<br />
Reset dominant Latch<br />
Set dominant latch<br />
Falling edge detection<br />
Rising edge detection<br />
Timers<br />
(TON)<br />
(TOF)<br />
Timer delay on<br />
Timer delay off<br />
Counting<br />
(CTU)<br />
Counter<br />
Comparison<br />
Tests<br />
(>=) Greater than or Equal to<br />
() Greater than.<br />
Arithmetic<br />
(+) Add (2 to 16 inputs)<br />
Logic<br />
(And Mask.)<br />
And Mask<br />
Signal<br />
Generation<br />
(sig_gen)<br />
Function Generator<br />
Data<br />
Manipulation<br />
Doc No P8094 Page 80 of 67<br />
Issue 14 September 2003
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