Huawei UPS2000 - Definition and Format for the Read Device Identifier Command; Frame Format; Command Definition

UPS2000-(6 kVA-20 kVA)
Modbus Protocol Development Guide
1 Communication Protocol
Issue 02 (2016-03-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
10
1.5.3 Definition and Format for the Read Device Identifier
Command
1.5.3.1 Frame Format
Command frame:
Byte
0
1
2
3
4
5
6
Field
ADDR
CMD
MEI
ReadDev
ID
Target ID
LSB
MSB
Desc
ripti
on
Controlle
r address
Functio
n code
MEI
type
ReadDev
ID
Object
ID
CRC checking
Response frame:
The response frame is not fixed. The frame depends on the object ID.
1.5.3.2 Command Definition
This command code allows reading identifiers and added packages that are relevant to the
physical and function description of the remote devices.
Simulate the port of the read device identifier as an address space. This address space consists
of a set of addressable data elements. The data elements are objects to be read, and the object
IDs determine these data elements.
A data element consists of three elements:

Basic device identifier: All objects are mandatory such as the manufacturer name,
product code, and revision version.

Normal device identifier: Except the basic data objects, the device provides additional
and optional identifiers and data object description. Define all types of objects according
to standard definitions, but the execution of this type of objects is optional.

Extension device identifier: Except the basic data objects, the device provides additional
and optional identifiers and special data object description. All these data are related to
the device.
Object ID
Object Name
or
Description
Type
Mandatory or
Optional
(M/O)
Category
0x00
Manufacturer
name
ASCII character
string
M
Basic
0x01
Product code
ASCII character
string
M
0x02
Main revision
version
ASCII character
string
M
0x03-0x7F
N/A
N/A
N/A
Normal