Denso RC5 Especificaciones descargar pdf (Pagina 99)

9.4.3 Changing Master Parameters

Usually there is no need to change these parameters. This is because the DeviceNet

master automatically detects the network status and writes the typical parameters.

Only when you need to change the EPR or ISD, change these parameters. For

example, you need to decrease the EPR value in order to shorten the disconnection

detection time.

To make master parameters revert to the original after change, enter “0.”

Do not change serial numbers.

What is “EPR” (Expected Packet Rate)?

This value is the basis for judging a “timeout” when the slaves communicate with the

master (polling or bit strobe). If there is no access from the master during the set

time, then the slave times out and an error status is established. For the master, this

value is the setting for the disconnection detection time.

The relationship is: Detection time = EPR value × 4 (ms)

Note that if a too small value is entered, the “No response from slave” error will occur

even in normal status.

What is “ISD” (Inter Scan Delay)?

This is the interval between the scan cycles in which the master scans the slave

devices.

Step 1

On the Auxiliary Function (I/O) screen, press [F8 MasterPrm].

1 2 ... 94 95 96 97 98 99 100 101 102 103 104 ... 137 138

Sin comentarios

Denso RC5 Especificaciones Pagina 99