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Input 1 Input 2 Input 3 Output<br />
AND<br />
Order-No. 7574 00 1X<br />
Output<br />
OR<br />
Output<br />
EX OR<br />
0 0 0 0 0 0 0<br />
0 0 1 0 1 1 0<br />
0 1 0 0 1 1 0<br />
0 1 1 0 1 0 0<br />
1 0 0 0 1 1 0 *)<br />
1 0 1 0 1 0 0 *)<br />
1 1 0 0 1 0 0 *)<br />
1 1 1 1 1 1 1<br />
Table 8: output status of the logical link functions<br />
*): Input 1 is automatically set to "0" here.<br />
Software "...590101"<br />
Functional description<br />
Output<br />
AND with feedback<br />
The transmission behaviours of the output of a gate can be influenced in different ways...<br />
- The parameter "Transmit on" of a gate together with the "Change the output" setting can<br />
reduce the bus load. In this case, telegrams are only transmitted when the logical status of<br />
the output changes. If, for example, the result of the link in time-monitored in a roller shutter<br />
actuator, it may be advisable to have the output transmit a telegram on each input event<br />
("Each input event" setting).<br />
- The gate can be disabled or enabled using the optional 1 bit blocking object. It is possible<br />
to set for which object value the block is active. The transmission behaviour of the logic<br />
gate can be defined after the block has been enabled. If, during a block, the input value is<br />
changed, then the output can automatically send a telegram, as soon as the block is lifted,<br />
or the gate waits until the next input telegram.<br />
- The output also possesses a filter function. This sets whether it can transmit each output<br />
value or whether it can only send "1" telegrams or only "0" telegrams.<br />
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