Siemens SIMATIC S7-1200

Extended instructions
9.7 Diagnostics (PROFINET or PROFIBUS)
S7-1200 Programmable controller
450 System Manual, V4.2, 09/2016, A5E02486680-AK
The following table shows the assignment between the structure elements of the
START_UP_SI parameter of the "RD_SINFO" instruction and the associated local tags of
OB 100.
START_UP_SI
structure element
Data type
OB 100 - Local tag
Data type
EV_CLASS
BYTE
OB100_EV_CLASS
BYTE
EV_NUM BYTE OB100_STRTUP BYTE
PRIORITY
BYTE
OB100_PRIORITY
BYTE
NUM
BYTE
OB100_OB_NUMBR
BYTE
TYP2_3
BYTE
OB100_RESERVED_1
BYTE
TYP1
BYTE
OB100_RESERVED_2
BYTE
ZI1
WORD
OB100_STOP
WORD
ZI2_3
DWORD
OB100_STRT_INFO
DWORD
9.7.3
LED (Read LED status)
Table 9- 148 LED instruction
LAD / FBD
SCL
Description
ret_val := LED(
laddr:=_word_in_,
LED:=_uint_in_);
Use the LED instruction to read the state of the LEDs on a CPU or
interface. The specified LED state is returned by the RET_VAL out-
put.
Table 9- 149 Data types for the parameters
Parameter and type
Data type
Description
LADDR
IN
HW_IO
Identification number of the CPU or interface
1
LED IN UInt
LED identifier number
1
RUN/STOP
Color 1 = green, color 2 = yellow
2
Error
Color 1 = red
3
Maintenance
Color 1 = yellow
4
Redundancy
Not applicable
5
Link
Color 1 = green
6
Tx/Rx
Color 1 = yellow
RET_VAL
OUT
Int
Status of the LED
1
For example, you can select the CPU (such as "PLC_1") or the PROFINET interface from the drop-down list of the
parameter.