RUGGEDCOM RSG2488
User Guide
Chapter 1
Introduction
Uint32 19
Section 1.6.3.4
Uint32
The Uint32 format describes Standard 2 ModBus 16 bit registers. The first register holds the most significant 16
bits of a 32 bit value. The second register holds the least significant 16 bits of a 32 bit value.
Section 1.6.3.5
PortCmd
The PortCmd format describes a bit layout per port, where 1 indicates the requested action is true, and 0
indicates the requested action is false.
PortCmd provides a bit layout of a maximum of 32 ports. Therefore, it uses two ModBus regsiters:
• The first ModBus register corresponds to ports 1 – 16
• The second ModBus register corresponds to ports 17 – 32 for a particular action
Bits that do not apply to a particular product are always set to zero (0).
A bit value of 1 indicates that the requested action is true. For example, the port is up.
A bit value of 0 indicates that the requested action is false. For example, the port is down.
Reading Data Using PortCmd
To understand how to read data using PortCmd, consider a ModBus Request to read multiple registers from
locatoin 0x03FE.
0x04 0x03 0xFE 0x00 0x02
The response depends on how many parts are available on the device. For example, if the maximum number of
ports on a connected RuggedCom device is 20, the response would be similar to the following:
0x04 0x04 0xF2 0x76 0x00 0x05
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.
To Next Page
Loading...
Need help?
General
