Siemens SIMATIC Ident - Cyclic Status Word

Appendix
A.2 Cyclic data
Ident profile and Ident blocks, standard function for Ident systems
136 Function Manual, 10/2018, C79000-G8976-C387-04
A.2.2
Cyclic status word
The following table shows the codes of the cyclic status word.
Table A- 5 Codes of the status word: Cyclic input data
Bit
Description
0 ... 3
UIN0 ... UIN3
4 ERR_IREQ
5
Reserved
6 RPTACT
7
SRESETACT
8
TP
9
TPC
10
Reserved
11
Job counter (CC_L)
12
Job counter (CC_H)
13
Acknowledgment counter (AC_L)
14
Acknowledgment counter (AC_H)
15
INITACT
Table A- 6 Significance of the bits of the cyclic control word
Command / bit
Significance for RFID systems
Significance for optical readers
UIN0 ... UIN3 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
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.
ERR_IREQ 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)
RPTACT 1 = "RPTCMD" is active
The acknowledgment bit shows that the "Repeat mode" of the CM/reader is
active.
SRESETACT 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.