Siemens TIM 1531 IRC, Руководство по эксплуатации, Страница: 214 / 338

Block library TeleControl ST7
5.7 Master copies
TIM 1531 IRC
214
Operating Instructions, 02/2018, C79000-G8976-C468-02
Explanation: Input for the acceptance of local parameter input.
The acceptance of the parameter values at the "LocalParameterInput" param-
eter input can be triggered via this input by a signal edge change.
A change from 0 to 1 at the "Release" input is taken into account only when
the following conditions are met:
•
An input area is specified by the "LocalParameterInput" parameter and this
is not identical to the output area specified by "ParameterOutput"
and
• The "Local" input is set to TRUE.
You can use "Release" for parameter input via software, e.g. via an operator
panel (OP). The "Release" input should then be set using a function key on
the OP. You can then enter several parameters initially on the OP. The pa-
rameter values are read in and checked for changes only when the Release
function key is activated.
The change is checked by comparing the current parameter values at the
"ParameterOutput" output. Changes in the input area are then copied immedi-
ately to the output area and transferred to the partner.
Only changed values are sent. If there is more than one change, the block
sends the data area in which all changed parameter values are located.
The "Release" input is reset automatically. Instead of a memory bit or data bit,
a digital input can also be specified as the input. The automatic reset would
not work with a digital input. This does not, however, have negative effects.
Acquisition via "Release" is edge triggered, in other words only once.
If you do not require the parameter, simply leave it open.
5.7.1.20 FC Safe
Function
The FC Safe ensures reliable input of commands and setpoints by using the 1-out-of-n
check.
The FC Safe checks th einput for the following data point typicals:
● Cmd01B_S
● Set01W_S
● Par12D_S
If an input is pending, the FC checks whether there is only one entry pending in the current
OB1 cycle and then enables the block reading in. As soon as two (or more) entries are
pending in an OB1 cycle, both entries are ignored.
In every CPU in which commands and/or setpoints are acquired, the FC Safe needs to be
called in OB1 to complete of all command and setpoint FBs.
The FC has separate monitoring for entries via different system memory areas. They are
divided into hardware entries and software entries: