Omron V780 Series User Manual page 230

7 Modbus/TCP Communications
Parameter
Transmission Read trans-
power mission
power
Write trans-
mission
power
 Response Formats
• Normal Response
Byte-0 Byte-1
Transaction identi-
fier
X X
Parameter
Register address
Word count
• Error Response
Byte-0 Byte-1
Transaction identi-
fier
X X
Parameter
Exception code
 Execution Examples
Example 1) Execution to Set the Following Transmission Powers in the Reader/Writer
TX: 00000000000BFF10C100000204001B001B
RX: 000000000006FF10C1000002
Example 2) Execution to Set the Following Transmission Powers in the Reader/Writer
Reader/Writer
Master Reader/Writer
Slave Reader/Writer 1
Slave Reader/Writer 2
Slave Reader/Writer 3
TX: 000000000017FF10C100000810001B001B001A001A0019001900180018
RX: 000000000006FF10C1000008
7 - 78
Specify the transmission power for read RF communications
commands in 4-digit hexadecimal.
000F to 001B hex (15 to 27 dBm)
Specify the transmission power for write RF communications
commands in 4-digit hexadecimal.
000F to 001B hex (15 to 27 dBm)
Byte-2 Byte-3 Byte-4
Protocol identifier Field length
0000 hex 0006 hex
The register address from the command is set.
The word count from the command is set.
Byte-2 Byte-3 Byte-4
Protocol identifier Field length
0000 hex 0003 hex
For details, refer to Exception Code on page 7-7 under 7-2-3 Response Format for
Error Completion on page 7-7.
Read transmission power: 27 dBm, Write transmission power: 27 dBm
Read transmission power
27 dBm
26 dBm
25 dBm
24 dBm
Description
Byte-5 Byte-6 Byte-7
Unit Function
identifier code
FF hex 10 hex
Description
Byte-5 Byte-6 Byte-7
Unit Function
identifier code
FF hex 90 hex
Description
Write transmission power
27 dBm
26 dBm
25 dBm
24 dBm
UHF RFID System V780-series Reader/Writer User's Manual (Z389)
Default setting
001B hex
(27 [dBm])
001B hex
(27 [dBm])
Byte-8 Byte-9 Byte-10 Byte-11
Register address Word count
C100 hex 0002 hex
Byte-8
Excep-
tion code
1 byte