iec850 driver by executing the commands delays transfer to RT of COT_actcon(7) until it receives termination.

iec850 driver by executing the commands delays transfer to RT of COT_actcon(7) until it receives termination.

Summary

Since introduction of 'Cancel Operate' feature (in 7.20) the known characteristics of ied850 driver makes difficulties for new feature of Command Processing module.

The driver, when ctlModel = 3 or 4, delays the transfer of COT_actcon (7) to the RT until it receives termination - until mms.InformationReport (for Oper). The driver transfers both COT: value 7 and 10 at the same - end - moment. It makes Command Processing module to believe that the execution is still in 'Select' while the IED is in "Operate" stage.

Description

Since introduction of 'Cancel Operate' feature (in 7.20) the known characteristics of ied850 driver makes difficulties for new feature of Command Processing module.

The driver, when ctlModel = 3 or 4, delays the transfer of COT_actcon (7) to the RT until it receives termination - until mms.InformationReport (for Oper). The driver transfers both COT: value 7 and 10 at the same - end - moment. It makes Command Processing module to believe that the execution is still in 'Select' while the IED is in "Operate" stage.

Solution

Now in control models with enhanced security the COT_actcon(7) is transferred to RT immediately - when driver receives from IED the Oper confirmation.

Information




Issue Number: 33110
Fixed on Date: 26.11.2014
Versions: 7.20 0 BUILD 17768