Appendix
A.2 Application examples of the algorithms
SIMATIC RF650R/RF680R/RF685R
322 Configuration Manual, 03/2018, C79000-G8976-C386-06
Example A - further procedure
Follow the steps below to take inventories for 10 seconds if the light barrier is interrupted.
1. Create an If condition that then always triggers the "Inventory" block when the light barrier
(input 1) is interrupted.
2. Specify the block parameters as follows;
– ATTRIBUTE = 0x80 or 0x81
– DURATION = 0x0A
– DUR_UNIT = 0x00
Example B - further procedure
Follow the steps below to take inventories if the light barrier is interrupted until the light
barrier is no longer interrupted:
1. Create an If condition that then always triggers the "Inventory" block (ATTRIBUTE =
0x86) when the light barrier (input 1) is interrupted.
2. Program the condition so that as soon as the light barrier is no longer interrupted, the
transponder data is fetched. Execute a further "Inventory" command with the following
parameters:
– ATTRIBUTE = 0x80
– DURATION = 0x00
– DUR_UNIT = 0x00
3. End the IF condition using a further "Inventory" command with the parameter
"ATTRIBUTE =0x87".
Parameter assignment - XML / OPC UA user
Follow the steps below to activate the "Smoothing" algorithm:
1. In the menu item "Settings - Read points" in the "Algorithms" area activate the
"Smoothing" algorithm and specify the values as follows:
– Observed Count: Here enter a value that guarantees reliable identification of the
transponders and at the same time ensures that transponders identified by sporadic
overshoots are sorted out. With the menu item "Diagnostics - Tag monitor" you can
determine which value is ideal here for your application.
– Lost Count: Enter the maximum value "65535" to ensure that all transponders are
identified during the specified period and are also not reported more than once. This
ensures that transponders located at the front of the palette do not leave the list of
identified transponders while the forklift truck passes the antenna and these
transponders already leave the antenna field while inventories are still being taken.
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