Omron V780 Series, Руководство пользователя

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7 Modbus/TCP Communications
7 - 10 UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
7-3 RF Communications Command
Options
This section describes the options that you can use together with RF communications commands (mul-
tiaccess or Modbus expansion). You can specify options to get the UII (EPC) of the RF Tag, the recep-
tion level, or other communications information together with the normal data for the command.
For commands with the multiaccess specification, the communications information specified with the
option is returned in the response for the command that gets the execution results, i.e., the two com-
mands are used together.
For commands with the Modbus expansion, the communications information specified with the option is
returned as an attachment to the response.
 Options
Option Specification Examples:
Specify 0001 hex to have the UII (EPC) attached.
Specify 0003 hex to have the UII (EPC) and reception level attached.
Specify 0011 hex to have the UII (EPC) and diagnostic results attached.
Options
Item Relevant bit Description Information size
UII (EPC) Bit 0 The StoredPC and UII (EPC code) are attached. 32 words
Reception
level Bit 1 The reception level (signed hexadecimal) is attached.
FFFF to FF9D hex (-1 to -99 [dBm])
• A value of 0 will be set if processing ended in an error. 1 word
Reserved 1 Bits 2 to 3 • These bits are reserved. ---
Diagnostic
result Bit 4 The diagnostic results (4-digit hexadecimal) are attached.
If communications diagnostics are disabled, 0000 hex is
attached.
For details, refer to
Response Formats on page 7-136 under
GET COMMUNICATIONS DIAGNOSTIC INFORMATION on
page 7-136.
1 word
Reader/Writer
Number Bit 5 This adds the Reader/Writer number (4 hexadecimal digits)
of the reader/writer communicating with the RF Tag.
0000 hex to 0007 hex 1 word
Reserved 2 Bits 6 to 15 • These bits are reserved. ---