Requested Packet Interval
Requested Packet Interval (RPI) is a configurable parameter that defines a specific rate
at which data is exchanged between the controller and the module.
You set the RPI value during initial module configuration and can adjust it as necessary
after module operation has begun.
IMPORTANT:
If you change the RPI while the project is
online, the connection to the module is closed and reopened in one of the following
ways:
- You inhibit the connection to the module, change the RPI value, and uninhibit the connection.
- You change the RPI value. In this case, the connection is closed and reopened immediately after you apply the change to the module configuration.
Protocol | Setting Range of RPI |
|---|---|
Generic ASCII | 2…750 ms (by 0.1 ms increments) |
Modbus Master | 6…750 ms (by 0.1 ms increments) |
Modbus Slave | 6…750 ms (by 0.1 ms increments) |
IMPORTANT:
If the RPI is not a multiple of 0.1 ms, round the number down to the closest
multiple values of 0.1 ms. For example, if the RPI is 2.37 ms, round to 2.3
ms.
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