Uint32; Portcmd - Siemens RUGGEDCOM ROS v4.3 User Manual

Chapter 1
Introduction
Section 1.8.3.4

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 1.8.3.5

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
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
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
A bit value of 1 clears Ethernet statistics on the corresponding port. A bit value of 0 does not clear the Ethernet
statistics.
0x10
24
0x03
0x04 0xF2
0x83 0x00
0x00
0xFE 0x00
0x76
0x01 2 0x55
0x81 0x00
0x02
0x00 0x05
0x76 0x00
0x02
RUGGEDCOM ROS
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0x50
Uint32