Cyclic Status Word - Siemens Simatic Ident Function Manual

Appendix
A.2 Cyclic data
A.2.2

Cyclic status word

The following table shows the codes of the cyclic status word.
Table A- 5
Bit
0 ... 3
4
5
6
7
8
9
10
11
12
13
14
15
Table A- 6
Command / bit
UIN0 ... UIN3
ERR_IREQ
RPTACT
SRESETACT
136
Codes of the status word: Cyclic input data
Description
UIN0 ... UIN3
ERR_IREQ
Reserved
RPTACT
SRESETACT
TP
TPC
Reserved
Job counter (CC_L)
Job counter (CC_H)
Acknowledgment counter (AC_L)
Acknowledgment counter (AC_H)
INITACT
Significance of the bits of the cyclic control word
Significance for RFID systems
With RFID readers, the number of
transponders in the antenna field is
indicated. UIN0 ... UIN3 can be
interpreted as binary values.
Example:
UIN3 = 0; UIN2 = 0; UIN1 = 1; UIN0
= 1
⇒ 3 transponders
1 = An error has occurred on the communications module or reader (e.g.
on start-up of the reader, connection termination or with RF61xR, RF68xR
on antenna errors or configuration changes)
1 = "RPTCMD" is active
The acknowledgment bit shows that the "Repeat mode" of the CM/reader is
active.
1= Indicates that the command currently being processed within the read-
er/optical reader has been aborted. The bit is reset to "0" after "SRESET"
has been reset.
Significance for optical readers
With optical reader devices, the
various states of the reader are
displayed.
UIN0: Corresponds to "IN_OP"
•
bit of the reader
UIN1: Corresponds to "RDY" bit
•
of the reader
UIN2 + UIN3: These two bits are
•
interpreted as an unsigned value
(bit 2 is the less significant bit)
that represents the number of
available decoded codes. If the
value = 3, three or more decoded
codes are available.
Ident profile and Ident blocks, standard function for Ident systems
Function Manual, 10/2018, C79000-G8976-C387-04