15.1.6 Monitored dataTable 534:PCGGIO Monitored dataName Type Values (Range) Unit DescriptionCNT_VAL INTEGER - - Actual pulse counter valueSCAL_VAL REAL - - Scaled value with time andstatus information15.1.7 Operation principleThe registration of pulses is done according to setting of CountCriteria parameter on oneof the 9 binary input channels located on the BIO module. Pulse counter values are sent tothe station HMI with predefined cyclicity without reset.The reporting time period can be set in the range from 1 second to 60 minutes and issynchronized with absolute system time. Interrogation of additional pulse counter valuescan be done with a command (intermediate reading) for a single counter. All activecounters can also be read by IEC 61850.Pulse counter (PCGGIO) function in the IED supports unidirectional incrementalcounters. That means only positive values are possible. The counter uses a 32 bit format,that is, the reported value is a 32-bit, signed integer with a range 0...+2147483647. Thecounter value is stored in semiretain memory.The reported value to station HMI over the station bus contains Identity, Scaled Value(pulse count x scale), Time, and Pulse Counter Quality. The Pulse Counter Qualityconsists of:• Invalid (board hardware error or configuration error)• Wrapped around• Blocked• AdjustedThe transmission of the counter value can be done as a service value, that is, the valuefrozen in the last integration cycle is read by the station HMI from the database. PCGGIOupdates the value in the database when an integration cycle is finished and activates theNEW_VAL signal in the function block. This signal can be time tagged, and transmittedto the station HMI. This time corresponds to the time when the value was frozen by thefunction.The BLOCK and READ_VAL inputs can be connected to logics, which are intended tobe controlled either from the station HMI or/and the local HMI. As long as the BLOCKsignal is set, the pulse counter is blocked. The signal connected to READ_VAL performs1MRK 506 335-UUS A Section 15Metering709Technical manual
