Section 5 V680S Command Details
READ DATA
This command reads data from the RF Tag in the communications field.
Command Area
Response Area
Execution Example
Reading Four Words of Data Starting from Word Address 1234 Hex in the RF Tag
Signal/data Data type Size Function
CmdCode/Command Code WORD 2 bytes 0002 hex
CmdParam1/Command Parameter 1
WORD 2 bytes
First word address of the data read from the RF Tag
0000 to FFFF hex
CmdParam2/Command Parameter 2
WORD 2 bytes
The maximum data size that you can read from an RF
Tag depends on the data size setting (in words).
0000 to 0200 hex
* The maximum size that you can specify depends on
the tag data link settings.
Signal/data Data type Size Function
ErrCode/Error Code WORD 2 bytes Error code
RespInfo1/Response Information 1 WORD 2 bytes Error device information
RespInfo2/Response Information 2 WORD 2 bytes Communications diagnostics result
RespData/Response Data
Read data ARRAY[]
OF BYTE
1,024 bytes
max.
Data read from the RF Tag
bit15-12 bit11-8 bit7-4 bit3-0
0
002
1
234
0004
CmdCode
CmdParam1
CmdParam2
Data name
+1
+2
+3
Memory offset
bit15-12 bit11-8 bit7-4 bit3-0
0
000
0
000
0000
ErrCode
RespInfo1
RespInfo2
Data name
+1
+2
+3
Memory offset
1
111
2
222
RespData[0-1]
RespData[2-3]
+4
+5
3
333
4444
RespData[4-5]
RespData[6-7]
+6
+7
Command Area Response Area
bit15-12 bit11-8 bit7-4 bit3-0
1
111
2
222
3333
1234
Hex
1235Hex
1236Hex
User address
44441235Hex
RF Tag Memory