Appendix
A.3 Command and acknowledgement frames
SIMATIC RF650R/RF680R/RF685R
Configuration Manual, 03/2018, C79000-G8976-C386-06
329
A.3.3
INVENTORY
Requests a list of all currently accessible transponders within the antenna range.
Table A- 5
Command
Byte
0, 1
2, 3
4
5
6, 7
8
9
10
11
12
13 ... 19
Mean-
ing
DBL
SN
CC
CI
TDB
DBN_H DBN_L DBL
--
SOURC
E
--
Value
35
--
'i'
'A'
1
0
1
35
0
0
0
Byte
20 ... 27 28 ... 31 32, 33
34
35
36, 37
38
39
40, 41
42, 43
44, 45
Mean-
ing
--
--
--
--
--
--
ATT
--
DURATI
ON
UNIT
--
Value
0
0
0
0
0
0
xx
0
xx
xx
0
Table A- 6
Reply
Byte
0, 1
2, 3
4
5
6, 7
8
9
10
11 ... 239
Mean-
ing
DBL
SN
CC
STATUS TDB
DBN_H
DBN_L
DBL
INVENTO
RY
Value
--
--
'i'
xx
--
--
--
--
--
Table A- 7
Description of the bytes
Byte
Description
12
Reserved (value = 0)
38
Attribute:
•
128 (0x80) = EPC-ID without additional information
•
129 (0x81) = EPC-ID with additional information on the RSSI value and re-
served bytes
•
134 (0x86) = Activate presence mode
•
136 (0x87) = Deactivate presence mode
40, 41
Duration:
The value depends on the unit selected in byte 42, 43. Example:
•
0x00 = no inventory (if "DURATION" = 0x00 or 0x01)
•
0x00 = one transponder (if "DURATION" = 0x02)
42, 43
Unit for "DURATION":
•
0x00 = ms
•
0x01 = inventories
•
0x02 = number of "OBSERVED" events