i950 and L_MC1P_CyclicParameterAccessRead: Lower number of FB instances can be used in parallel (fixed as of V03.27.00)
Fixed from:
Library L_MC1P_MotionControlBasic (FAST Motion) from V03.27.00
(Update via Package Manager)
Behavior of the new version:
DThe number of parallel readable parameters is now again on the original number instances instances of the FB L_MC1P_CyclicParameterAccessRead set. style="background-color: rgb(255, 255, 255);">
i950 BS-STO: to to 12 instances
i950 ES: to to 9 Instances
Description of behavior:
L_MC1P_CyclicParameterAccessRead;
The IEC project , with this FB parameter from the i950 inverter cyclically read . Readable are the parameters that as PDO mappable .
Are multiple instances of the FB 'L_MC1P_CyclicParameterAccessRead' used used, then the the following aspects to consider:
LibraryL_MC1P_MotionControlBasic from V03.23.00 Die number of parallel instances instances of the FB 'L_MC1P_CyclicParameterAccessRead` has itself by 2 units by so that accordingly fewer parameters read in parallel read can can be: i950 BS-STO: to to 10 instances i950 ES: to to 7 Instances
FB L_TB2P_AxisInterface: In the standard wiring already 6 instances of the FB L_MC1P_CyclicParameterAccessRead instances. Accordingly fewer are for the parallel readout of parameters for available.
FB input xEnable from FB L_MC1P_CyclicParameterAccessRead: With a permanently activexEnable=True, parameters are read cyclically. No toggling signal is required to generate edges, as with an xExecute input. On the contrary,With a toggling input xEnable, the computing time required increases because the resources of another FB are occupied for 3 cycles, which reduces the number of parameters that can be read in parallel.
Under what conditions does the behavior occur?
Parallel use of multiple instances of FB L_MC1P_CyclicParameterAccessRead and in particular:
the input xEnable input is incorrectly controlled with a toggling signal.
Affected products
Library: L_MC1P_MotionControlBasic (FAST Motion) from V03.23.00
Short-term measures, Assessment/Recommendations:
When reading parameters, adjust the number of parallel instances of FBL_MC1P_CyclicParameterAccessRead instances used in parallel to the above conditions.
For existing projects, it may be necessary to reduce the previous number of parallel instances of the FB.
About the inputs xMonitoringXXX of FB L_TB2P_AxisInterface individual cyclic read requests can be deactivated if necessary.
