Siemens SIMATIC RF170C Operating Instructions Manual page 64

Appendix
A.2 Operation of optical handheld readers, access control readers or serial devices
If the connection is not established or the connection attempt is incorrect, the FB outputs the
error message "Error_MOBY = 03" or "0xE4FE03" with the Ident profile.
Read
When the "Read" command is started, the data that the CM has already received is transferred
to the controller.
If the "Read" command is started before the CM has received data, the command remains
active until the CM has received data that is then transferred to the controller. An active
"Read" command can be canceled with an "Init_run"/"Write_Config" command.
The presence bit ("TP" or "ANZ_MDS_present") indicates that the CM has received new data
and that this data is available for fetching with a "Read" command. After data transmission to
the controller, the presence bit is reset unless new data has already been received.
When doing this, note the buffer size and the buffer overflow. If the receive buffer of the CM
is full, existing data is overwritten by newly received data.
SLG-Status/Reader_Status
The device status of the optical handheld reader can be obtained using the "SLG-Status"
command (sub-command "13") or "Reader_Status" (ATTRIBIUTE "0x8D"). The following
information is contained in the acknowledgment of the status command sent by the CM
(response of the handheld reader):
Table A- 9
Indicates that data contains the zero-terminated Reader information string (ofprintable ASCII
characters and TAB) in the following format:
IVVVVWWWWXXXXSSSSSSSSSSAOODYYYYHHIIIIJJJJKKKKLLLL<TAB>Z...Z
0xD
I
VVVV
WWWW
XXXX
SSSSSSSSSS
A
OO
D
YYYY
HH
IIII
JJJJ
KKKK
LLLL
<TAB>
Z...Z
64
Structure of the "Status" acknowledgment frame of the optical handheld reader
is reserved
indicates 'I' string output
is the application firmware version number
is the core application firmware version number
is reserved
is the Reader's serial number (ten digits)
is the current execution state: "A" means core is running
is the OEM identifier
is the display type: "0" is no display device
is reserved
is the hardware revision
is the hardware type identifier: Reports the value in register "0x21b"
is the boot application version
is the operating system kernel version
is the root file-system version
is the ASCII TAB character
is the OEM decoder version: a null terminated string of printable ASCII characters
Operating Instructions, 02/2022, J31069-D0176-U001-A6-7618
SIMATIC RF170C