Document #10-32813 Rev A; June 07, 2019
Page
37
of 69
Three Drives in Mass Storage Class
The RMA PLUS provides three disk drives for user access. Upon connection, the firmware has control of the drives.
Pressing the
Eject
button in Windows® Explorer mounts the drive to the PC, giving the PC exclusive access to the
device. When a drive is mounted to the PC, all firmware services that use this drive are suspended. It is important to
eject/unmount the drive from the PC and give control back to the device firmware when you are finished. It is also import-
ant to eject/unmount the drives from the PC before removing the USB cable to prevent data corruption.
Each disk drive is enumerated with a Logical Unit Number (LUN). Windows® may mount them in any order, but they are
enumerated as follows in the firmware:
LUN 0: MICRO SD
Volume: (sd:)
LED Instance 1 (A) indicates the drive state by default.
The Micro SD drive is a 4 GB class 4 micro SDHC card (FAT32) for standard models and a 16 GB class 10 micro SDHC
card (FAT32) for data logging models. It is an extension of the product’s memory and not removable at runtime. The SD
card is primarily used for data logging, serving web pages, software and documentation distribution.
NOTE: The RMA PLUS will not function properly without the SD card inserted. If necessary, you may upgrade the SD
card to a larger capacity and / or class if the new card is high capacity (SDHC). Extended capacity micro SD cards
(SDXC) are not supported by this device.
LUN 1: NOR FLASH
Volume: (nor:)
LED Instance 2 (B) indicates the drive state by default.
The NOR Flash drive is a 10 MB FAT16 partition on the internal flash memory. Its primary use is for product con-
figuration because of its speed and persistence compared to the SD card. This is where configuration files live by
default.
LUN 2: RAM DISK
Volume: (ram:)
LED Instance 3 (C) indicates the drive state by default.
The RAM disk is a 1 MB FAT12 partition on the external SDRAM chip. This is volatile memory. Any files directed here
will be lost when the product resets. By default, only the event log is stored here.
Data Logging
The data logging feature is only available for model number RMAP-XX
D
X-XXXX.
Data logging allows you to log any data points in the system at a specified interval. Log files are stored on the MICRO
SD drive (sd:\DataLog). This path cannot be changed by a setup file key.
To use this feature, add the setup keys DataLog and LogIntervalSec to the setup.csv file.
Key
Value
Feature Definition
DataLog nor:\Gateway\DataLog.csv
Data log-
ging
Applies only to model number RMAP-XX
D
X-XXXX.
This provides the full file name / path where the data log configuration file lives. Elements in
this file will be written to a log file at a pre-defined interval.
Setup Key: Data Log
