Chapter 1
Introduction
RUGGEDCOM RSG2488
User Guide
20 PSStatusCmd
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 1.6.3.7
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 1.6.3.8
TruthValues
The Truthvalues format represents a true or false status in the device:
• 1 indicates the corresponding status for the device to be true
• 2 indicates the corresponding status for the device to be false
Reading the FailSafe Relay Status From a Device Using TruthValue
To understand how to use the TruthValue format to read the FailSafe Relay status from a device, consider a
ModBus request to read multiple registers from location 0x0044.
0x04 0x00 0x44 0x00 0x01
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