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7 Ethernet/IP Communications
UHF RFID System V780-series Reader/Writer User’s Manual (EtherNet/IP
TM
) (Z402)
7-1
Ou
tlin
e
7
7-1
-4 Memor
y Assignmen
ts
This section describes the memory assignments for the Command Area and Response Area in the
PLC.
Memory is aligned in 16-bit units. The bit order for each field is little endian.
*. Reserved (resv) bits are for future expansion. Do not turn them ON and OFF.
7-1-4
Memory Assignments
Command Area (from PLC Originator to Reader/Writer Target)
I/O mem-
ory off-
set
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
+0
Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv Resv
EXE
+1
Command Code
+2
Command Parameter 1
+3
Command Parameter 2
+4
Reserved Area
+5
Update Counter Response
+6
Command Data
(The format depends on the command.)
:
+N
Signal/data
Name
Data type
Size
Description
EXE
Command Execution
BOOL
1 bit
• This bool requests the Reader/Writer to execute a com-
mand.
When the Reader/Writer detects that this signal has
turned ON, it executes the command specified by the
“Command code”.
Moreover, when the Reader/Writer detects that this signal
has turned OFF during the execution of the RF Tag com-
munications command, it suspends/cancels the communi-
cations processing.
CmdCode
Command Code
WORD
2 bytes
This word stores the command code.
CmdParam1
Command Parameter 1
WORD
2 bytes
These words store the command parameters.
Refer to the sections for individual commands for details.
CmdParam2
Command Parameter 2
WORD
2 bytes
Reserved
Reserved Area
WORD
2 bytes
This is an unused area for arranging the command data start
position in a 4-byte boundary.
*
00 hex fixed
Cnt
Response
Update Counter
Response
WORD
2 bytes
This word specifies the update count of the execution results
received by the host device at the end of the reception of the
results of continuous execution of the command from the
RFID sensor unit. It indicates the value incremented by +1
each time the execution results are received. The count
starts from 0 when command execution is started. The count
value returns to 0 after reaching 65,535.
CmdData
Command Data
---
---
These words store the command data.
Refer to the sections for individual commands for details.
Содержание V780-HMD68-EIP-JP
Страница 14: ...Manual Structure 12 UHF RFID System V780 series Reader Writer User s Manual EtherNet IPTM Z402 ...
Страница 36: ...2 System Configuration 2 6 UHF RFID System V780 series Reader Writer User s Manual EtherNet IPTM Z402 ...
Страница 52: ...3 Part Names and Functions 3 16 UHF RFID System V780 series Reader Writer User s Manual EtherNet IPTM Z402 ...
Страница 62: ...4 Installation and Connections 4 10 UHF RFID System V780 series Reader Writer User s Manual EtherNet IPTM Z402 ...
Страница 152: ...6 Functions 6 80 UHF RFID System V780 series Reader Writer User s Manual EtherNet IPTM Z402 ...
Страница 236: ...7 Ethernet IP Communications 7 84 UHF RFID System V780 series Reader Writer User s Manual EtherNet IPTM Z402 ...
Страница 282: ...8 Browser Interface 8 46 UHF RFID System V780 series Reader Writer User s Manual EtherNet IPTM Z402 ...
Страница 308: ...10 Maintenance and Inspection 10 4 UHF RFID System V780 series Reader Writer User s Manual EtherNet IPTM Z402 ...
Страница 321: ...I 1 I UHF RFID System V780 series Reader Writer User s Manual EtherNet IPTM Z402 Index ...
Страница 324: ...I 4 UHF RFID System V780 series Reader Writer User s Manual EtherNet IPTM Z402 Index ...
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