Yaskawa DeviceNet Option Card CM05x Manuel d'utilisateur télécharger pdf (Page 44)

Drive Operation on DeviceNet 7-3

The Drive Application Parameters are held both in Drive EEPROM and Drive RAM. On power-up, the Drive

Application Parameters that are stored in Drive EEPROM memory are transferred to Drive RAM memory.

If Drive Application Parameters are changed via DeviceNet, the new data will be placed into Drive Inactive RAM

memory. At this point, the new data will not

be activated or retained if a Drive power loss occurs. In order for

the new data to be retained, the ‘ACCEPT’ command must be executed. When the ‘ACCEPT’ command is

executed, the new data is transferred into Active RAM memory. In order for the new data to be retained, the

‘ENTER’ command must be executed. When the ‘ENTER’ command is executed, all

of the Drive Application

Parameters in Drive RAM memory are transferred into Drive EEPROM memory.

Some Parameter Data registers may be written to while the Drive is running. These parameters are called run

operative parameters. For a list of these parameters, refer to the Drive User Manual.

All other Parameter Data registers may only be written to when the Drive is stopped. These are called non-run

operative parameters.

If new data is written to any parameter serially, and is not followed by an ‘ENTER’ command, a “Busy Write

Protected” message will flash on the Digital Operator display if an attempt is then made to change a parameter

using the Digital Operator.

Drive Runtime

Commands

Drive Runtime

Status/Diagnostics

Drive Application

Parameters

Drive Active

RAM

Drive EEPROM

Drive Application

Parameters

ENTER

Power-Up

Drive Application

Parameters

Drive Inactive

RAM

ENTER

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Yaskawa DeviceNet Option Card CM05x Manuel d'utilisateur Page 44