Prosoft-technology 5201-MNET-101S User Manual download pdf (Page 33)

IEC-101 Slave ♦ ProLinx Communication Gateway 101S Protocol Configuration

IEC 60870-5-101 v3 Slave (Firmware version 3.xx) Protocol Manual

ProSoft Technology, Inc. Page 33 of 159

August 6, 2010

2.1.22 IV Check Delay Time

1 to 65535 seconds, or 0 to disable Invalid Bit Monitoring

This parameter sets the number of seconds between IV Bit value checks. Every

IEC database Monitor information object which has an IV Bit address set greater

than 0 will have that bit address checked at the interval specified by this

parameter.

Setting this parameter to zero (0) will disable data validity checking.

2.1.23 IV Fail Count

1 to 65535 seconds, or 0 to disable Invalid Bit Monitoring

This parameter sets the number of successive IV Bit check failures which must

occur before the data from an IEC database Monitor information object will be

reported to the remote Client as invalid data.

An IV Bit Check Failure occurs when the IV Bit value in the gateway database is

set ON {when it contains a value of one (1)} at the time an IV Bit Check is

performed. IV Bit Check failures are counted and held in separate IV Bit Check

Failure accumulators for each IEC Monitor information object configured for

validity checking. If the value in any point's failure accumulator becomes equal to

the value set in this IV Fail Count parameter, the gateway will consider data from

this point as invalid and report to the Client this invalid status, along with the

point's data value.

Setting this parameter to zero (0) will disable data validity checking.

2.1.24 Event Scan Delay

1 to 65535 milliseconds, or 0 to disable

If set to 0, the feature will be disabled and the gateway will not generate any

events. If set from 1 to 65535, the parameter represents the number of

milliseconds between event scanning. This parameter defines how often the

program will scan for new events in the databases.

NOTE: The lower you set this value, the more negative effect it will have on overall gateway data

update and transfer performance. Scanning for new events causes an interrupt of other data

manipulation functions. The more often these scan interrupts occur, the less processor time the

gateway will have available for other data operations. When choosing a value for this parameter,

you should consider such factors as how often events might be generated by your application and

how often you need to recognize and respond to such events. This will allow you to set this value

as high as it can be set and still maintain your overall event capturing and reporting strategy.

Doing so can reduce the amount of interrupts, prevent excessive event scanning, and maximize

data update and transmission rates.

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Prosoft-technology 5201-MNET-101S User Manual Page 33