Advanced Connection Reaction Time Limit Configuration dialog box parameters

Enter the requested packet interval. This is the period (in ms) at which data updates over a connection. For example, an input device produces data at the RPI that you assign.

To change the RPI, the device must be offline or online in Program mode. You can modify this value in the

Safety

view.

Enter the number of RPIs to wait for a packet before declaring a timeout. This translates into the number of messages that may be lost before declaring a connection error.

A value of 1 indicates that no messages are lost, as there must be a packet for every RPI interval.

A value of 2 indicates that one message is possibly lost. In other words, as long as a packet is seen in every two RPI intervals, no timeout occurs.

Enables you to reduce the Connection Reaction Time Limit in cases where the transport time of a message is significantly less than the RPI value. This value is displayed as a percent. The valid range is from 10 through 600. The default is 200.

Displays the predicted period of safety packets on the associated connection. If the Max connection reaction time ever exceeds the Reaction Time Limit, a connection fault occurs.

This value is calculated and rounded to the nearest 128 microseconds.

For Input Connections, Connection Reaction Time Limit = Input RPI x (Timeout Multiplier + Network Delay Multiplier).

For Output Connections, Connection Reaction Time Limit = Safety Task Period x (Timeout Multiplier + Network Delay Multiplier - 1).