RUGGEDCOM ROS
User Guide
Chapter 1
Introduction
Alarm 25
Section1.8.3.6
Alarm
The Alarm format is another form of text description. Alarm text corresponds to the alarm description from the
table holding all of the alarms. Similar to the Text format, this format returns an ASCII representation of alarms.
NOTE
Alarms are stacked in the device in the sequence of their occurence (i.e. Alarm 1, Alarm 2, Alarm 3,
etc.).
The first eight alarms from the stack can be returned, if they exist. A zero (0) value is returned if an alarm does not
exist.
Section1.8.3.7
PSStatusCmd
The PSStatusCmd format describes a bit layout for providing the status of available power supplies. Bits 0-4 of the
lower byte of the register are used for this purpose.
• Bits 0-1: Power Supply 1 Status
• Bits 2-3: Power Supply 2 Status
Other bits in the register do not provide any system status information.
Bit Value Description
01 Power Supply not present (01 = 1)
10 Power Supply is functional (10 = 2)
11 Power Supply is not functional (11 = 3)
The values used for power supply status are derived from the RUGGEDCOM-specific SNMP MIB.
Reading the Power Supply Status from a Device Using PSStatusCmd
To understand how to read the power supply status from a device using PSStatusCmd, consider a ModBus Request
to read multiple registers from location 0x0043.
0x04 0x00 0x43 0x00 0x01
The response may look like:
0x04 0x02 0x00 0x0A
The lower byte of the register displays the power supply's status. In this example, both power supplies in the unit
are functional.
Section1.8.3.8
TruthValues
The Truthvalues format represents a true or false status in the device:
• 1 indicates the corresponding status for the device to be true
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