Rugged Operating System (ROS ® ) Software User ... - RuggedCom

Chapter 1
Introduction
RUGGEDCOM ROS
User Guide
0x10 0x00 0x80 0x00 0x01 2 0xFF 0x00
• FF 00 for register 00 80 clears the system alarms
• 00 00 does not clear any alarms
The response may look like:
0x10 0x00 0x80 0x00 0x01
Section 1.5.1.3
Uint16
This format describes a Standard Modbus 16-bit register.
Section 1.5.1.4
Uint32
This 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 1.5.1.5
PortCmd
This 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 registers:
• 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.
A bit value of 1 indicates that the requested action is true. For example: the particular port is “up”.
A bit value of 0 indicates that the requested action is false. For example: the particular port is “down”.
Reading data using PortCmd:
For example, consider a Modbus Request to read multiple registers from location 0x03FE.
0x04 0x03 0xFE 0x00 0x02
The response depends on how many ports are available on the device. For example, if the maximum number of
ports on a connected RUGGEDCOM device is 20, the response would look like 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. In this example, 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
bits in register 2 corresponding to the non-existing ports 21–31 are zero.
20 Uint16