Siemens SIMATIC VS120 Operating Instructions Manual page 162

Alarm, error and system messages
11.4 Slave diagnostics or /O device diagnostics
Its local variables OB_82_EV_CLASS, OB_82_MDL_DEFECT, and OB82_EXT_FAULT can
have the following values:
Variable
OB_82_EV_CLASS
OB_82_MDL_DEFECT
OB_82_EXT_FAULT
The entry "Module OK" now appears in the diagnostic buffer in PROFIBUS DP and the error
text from the GSD file is no longer shown as the module status of the SIMATIC VS120.
Diagnostics for PROFIBUS DP
Reading the diagnostics data (slave diagnostics) with the SFC13 "DPNRM_DG"
Bytes 7 through 10 of the slave diagnostic information (diagnostic bytes 0 through 3) read
with SFC13 correspond to the 32-bit long field "Unit_Diag_Bit" of the GSD file
SI0180ED.GSD or the diagnostic bits shown in the table in Error messages.
The slave diagnostic information is structured designed as follows:
PROFIBUS
frame
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
Byte 9
Byte 10
11-12
Value
B#16#38
FALSE
FALSE
Meaning
Station status 1 (bit 3 = 1: External diagnostic
information available)
Station status 2
Station status 3
Master PROFIBUS address
Manufacturer ID (high byte): B#16#80
Manufacturer ID (low byte): B#16#ED
Length of the SIMATIC VS120-specific diagnostic
data including byte 6: B#16#05
Diagnostic byte 0 (bit 1 "Sensor not found")
Diagnostic byte 1
Diagnostic byte 2
Diagnostic byte 3
Meaning
Event exiting state
No module fault
No external error
Scope of validity
According to standard
According to standard
According to standard
According to standard
According to standard
According to standard
According to standard
SIMATIC VS120-specific
SIMATIC VS120-specific
SIMATIC VS120-specific
SIMATIC VS120-specific
Vision Sensor SIMATIC VS120
Operating Instructions, Edition 02/2006, A5E00757507-01