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Configuration

5-30 7SJ62 Manual

C53000-G1140-C121-1

entered in the selection window, as shown in Figure 5-30. The selection window may

be found from the open configuration matrix by clicking 2SWLRQV in the menu bar and

then selecting &KDWWHU%ORFNLQJ.

Figure 5-30 DIGSI

4: Setting the Chatter Blocking Feature

Defining the Moni-

toring Criteria

The operating mode of the chatter blocking feature is determined by five settings:

• 1XPEHURISHUPLVVLEOHVWDWHFKDQJHV

This setting establishes how often the state of a binary input within the initial test

time may change. If this number is exceeded, the binary input is or remains closed.

If the setting is 0 the chatter blocking is disabled.

• ,QLWLDO7HVW7LPH - Within this time interval (in seconds), the number of state

changes of a binary input is checked. The time interval begins with the first activa-

tion of a signal to the binary input.

• 1XPEHU2I&KDWWHU7HVWV

This number represents how many check cycles should be conducted before the

binary input is finally blocked. Please consider that even a high set value can be

reached over the normal life span of the device and could lead to blocking of the

binary input. Therefore this value can also be set to infinity. For this enter the digit

sequence of οο .

• &KDWWHU,GOH7LPH - If the number of state changes at a binary input is exceed-

ed during the initial test time or the subsequent test time, the chatter idle time inter-

val is initiated. The affected binary input is blocked for this time interval. The Chatter

idle time setting is entered in minutes. This settings can only be programmed if the

Number of chatter tests is not set to zero.

• 6XEVHTXHQW7HVW7LPH - Within this time interval, the number of state changes

at a binary input is checked again. This interval begins after the chatter idle time in-

terval has expired. If the number of condition changes is within allowable limits, the

binary input is released. Otherwise, the idle interval is restarted, until the maximum

number chatter tests is reached again. The Subsequent Test Time setting is en-

tered in seconds. This settings can only be programmed if the Number Of Chatter

Tests is not set to zero.

The settings for the monitoring criteria of the chatter blocking feature are set only once

for all binary inputs; however, the status of the chatter suppression can be set individ-

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