Siemens RUGGEDCOM RSG2200 User's Guide Page 33

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RUGGEDCOM ROS
User Guide
Chapter 1
Introduction
Alarm 21
In this example, bytes 3 and 4 refer to register 1 at location 0x03FE, and represent the status of ports 1 – 16.
Bytes 5 and 6 refer to register 2 at location 0x03FF, and represent the status of ports 17 – 32. The device only
has 20 ports, so byte 6 contains the status for ports 17 – 20 starting from right to left. The rest of the bites in
register 2 corresponding to the non-existing ports 21 – 31 are zero (0).
Performing Write Actions Using PortCmd
To understand how data is written using PortCmd, consider a Write Multiple Register request to clear Ethernet
port statistics:
0x10 0x00 0x83 0x00 0x01 2 0x55 0x76 0x00 0x50
A bit value of 1 clears Ethernet statistics on the corresponding port. A bit value of 0 does not clear the Ethernet
statistics.
0x10 0x00 0x81 0x00 0x02
Section 1.6.3.6
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 1.6.3.7
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.
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