Omron V780 Series User Manual page 285

GET NOISE LEVEL
 Function
This command measures the ambient noise level around the Reader/Writer.
 Command Format
Byte-0 Byte-1
Transaction identi-
fier
X X
Parameter
Register address
Word count
 Response Formats
• Normal Response
Byte-0 Byte-1
Transaction identi-
fier
X X
Byte-9 Byte-10
Channel 1 noise
level
2 bytes
Parameter
Field length
UHF RFID System V780-series Reader/Writer User's Manual (Z389)
Byte-2 Byte-3 Byte-4
Protocol identifier Field length
0000 hex 0006 hex
The register address (DB00 hex) for getting the noise level
Word count of noise information from channels 1 to n
* The range of the word count for each model number is as follows:
V780-HMD68-ETN-JP: 000F hex
V780-HMD68-ETN-KR: 0013 hex
V780-HMD68-ETN-CN: 0010 hex
V780-HMD68-ETN-TW: 000A hex
V780-HMD68-ETN-IN/-ID/-EU/-RU: 0004 hex
V780-HMD68-ETN-MY/-SG: 0008 hex
V780-HMD68-ETN-US/-MX: 0032 hex
Byte-2 Byte-3 Byte-4 Byte-5
Protocol identifier Field length
0000 hex 2 bytes
... ...
Byte-m
...
Channel n noise level
... 2 bytes
Gives the total number of bytes starting from the unit identifier in 4-digit hexadeci-
mal.
* The field length for each model number is as follows:
V780-HMD68-ETN-JP: 0021 hex (33)
V780-HMD68-ETN-KR: 0029 hex (41)
V780-HMD68-ETN-CN: 0023 hex (35)
V780-HMD68-ETN-TW: 0017 hex (23)
V780-HMD68-ETN-IN/-ID/-EU/-RU: 000B hex (11)
V780-HMD68-ETN-MY/-SG: 0013 hex (19)
V780-HMD68-ETN-US/-MX: 0067 hex (103)
7 Modbus/TCP Communications
Byte-5 Byte-6 Byte-7
Unit Function
identifier code
FF hex 03 hex
Description
Byte-6 Byte-7
Unit Function
identifier code
FF hex 03 hex
*1
Description
Byte-8 Byte-9 Byte-10 Byte-11
Register address Word count
DB00 hex 2 bytes
Byte-8
Byte
count
1 byte
7 - 133
7