Siemens SIMATIC ET 200eco PN - Diagnostics messages of the I;O devices

Interrupt, error, and system messages
7.4 Diagnostics messages of the I/O devices
ET 200eco PN
92 Operating Instructions, 08/2016, A5E01250250-AJ
7.4
Diagnostics messages of the I/O devices
Actions after a diagnostics message
Every diagnostics message triggers the following actions:
● The SF LED (red) of the I/O device lights up.
● Several simultaneous diagnostics messages are possible.
● Diagnostics data are reported as diagnostics interrupts and can be read from data
records.
● Diagnostics messages are saved to the diagnostics buffer of the I/O controller.
● OB 82 is called. If there is no OB 82, the IO Controller goes to STOP.
● Acknowledgment of the diagnostics interrupt to enable new interrupts.
7.5
Diagnostics with STEP 7
7.5.1
Reading diagnostics data
Options for reading the diagnostics data
Table 7- 7 Reading diagnostics data in STEP 7
Automation system
with
IO Controller
Block or register in
STEP 7
Application
See ...
SIMATIC S7 For example in
HW
Config by selecting
Station > Open
Online
Device diagnostics in plain
text on the STEP 7 inter-
face (in the Quick View,
Diagnostics View or Module
Status windows)
"Hardware diagnostics" in
the STEP 7 online help
SFB 52
"RDREC"
Reading data records from
the IO Device
SFB, see STEP 7 online
help (System func-
tions/System function
blocks)
SFB 54
"RALRM"
Receiving interrupts from
the IO Device
SFB, see STEP 7 online
help (System func-
tions/System function
blocks)