Monitor: NVRAM Commands

Description: nvset group field value

To modify the list with the nvset command, you must specify the group and field to be modified and the new value. The group, field, and value can be abbreviated, as in the exam- ples below:

Example: =>nvset console port A

=>nvset con dat 6

nvupdate

attempts to write the Emerson- and monitor-defined nonvolatile sections back to the EEPROM. First the data is verified, and then it is written to the device. The write is verified and all errors are reported.

Description: nvupdate

Configuring the Default Boot Device

The default boot device is defined in the nonvolatile memory group BootParams, in the field BootDev. When the PmT1 and PmE1 is reset or powered up, the monitor checks this field and attempts to boot from the specified device.

Note: The fields in the ‘BootParams’ group have different meanings for each device. For example, “DevType” values are not used for Bus devices, but are used by Serial devices to select the format for downloading.

Currently, the monitor supports Serial, ROM, and Bus as standard. If you edit the BootDev field and define a device that is unsupported on your board, the monitor will display the message:

Unknown boot device

Defining BootDev as Serial calls the command bootserial, defining BootDev as ROM calls the command bootrom, and defining BootDev as Bus calls the command bootbus. See the “Boot Commands” Section for details on these commands.

Example: In this example, nvdisplay and nvupdate are used to change the default boot device from the bus to the ROM. The changes are made to the BootParams group.

1At the monitor prompt, type:

=>nvdisplay

2Press <cr> until the BootParams group is displayed.

Group ‘BootParams’

BootDevBus(None,Serial,ROM,Bus,EPROM)

LoadAddress0x40000

ROMBase0xfff30000

ROMSize0x40000

DevType0

10002367-02

PmT1 and PmE1 User’s Manual

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Emerson PMT1, PME1 user manual Nvupdate, Configuring the Default Boot Device

PMT1, PME1 specifications

The Emerson PME1 and PMT1 are advanced solutions in the realm of process management and automation, designed to enhance the efficiency and effectiveness of industrial operations. These devices play a crucial role in improving process control and providing comprehensive data analysis, which can lead to increased productivity and reduced operational costs.

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