Text; Cmd; Uint16 - Siemens RUGGEDCOM ROS v4.3 User Manual

RUGGEDCOM ROS
User Guide
• Section 1.8.3.8, "TruthValues"
Section 1.8.3.1

Text

The Text format provides a simple ASCII representation of the information related to the product. The most
significant register byte of an ASCII characters comes first.
For example, consider a Read Multiple Registers request to read Product Identification from location 0x0000.
0x04
The response may look like:
0x04 0x10 0x53
0x00 0x00 0x00
In this example, starting from byte 3 until the end, the response presents an ASCII representation of the characters
for the product identification, which reads as SYSTEM NAME. Since the length of this field is smaller than eight
registers, the rest of the field is filled with zeros (0).
Section 1.8.3.2

Cmd

The Cmd format instructs the device to set the output to either true or false. The most significant byte comes first.
• FF 00 hex requests output to be True
• 00 00 hex requests output to be False
• Any value other than the suggested values does not affect the requested operation
For example, consider a Write Multiple Registers request to clear alarms in the device.
0x10 0x00
• FF 00 for register 00 80 clears the system alarms
• 00 00 does not clear any alarms
The response may look like:
0x10
Section 1.8.3.3

Uint16

The Uint16 format describes a Standard ModBus 16 bit register.
Text
0x00 0x00
0x59 0x53 0x54
0x00 0x00
0x80 0x00
0x00 0x80
0x00
0x45 0x4D 0x20
0x01 2
0x00
Introduction
0x08
0x4E 0x41 0x4D
0xFF 0x00
0x01
Chapter 1
0x45
23