Messages And Errors; Diagnostics Error Ob 82 - Siemens SIMATIC EMS400S PSB-S Operating Instructions Manual

Diagnostics options for PSB modules

8.2 Messages and errors

Diagnostics information details
1. You can obtain detailed information by selecting "Project navigation" Controller > Online
& Diagnostics in the window.
2. Select "Work area" Diagnostics > Diagnostic buffer in the window.
The "Diagnostic buffer" window displays all events, including their details.
For more information, refer to:
"S7-1200 Automation System" system manual
(http://support.automation.siemens.com/WW/view/de/36932465/0/en)
8.2 Messages and errors
The PSB module transmits a diagnostics interrupt request to the PU in the following
situations:
● The PSB module has detected a problem – incoming event
● The problem was rectified or is no longer pending – outgoing event
● An event is pending and another event is detected.
If an event is pending and another event is detected, the first event is acknowledged as
"outgoing event", while the new event is entered as "incoming event".
8.2.1

Diagnostics error OB 82

If an OB 82 exists, the operating system responds to incoming or outgoing events by calling
OB 82. The S7-1200 CPU will then interrupt the cyclic user program and execute OB 82.
You are provided diagnostics information in the local data of OB 82. This information may
include:
● Which module has triggered the interrupt?
● Which type of error has occurred?
On completion of OB 82, the S7-1200 CPU resumes the cyclic program at the interrupt
position.
For more information about OB 82, refer to:
● EMS400S product documentation
(http://support.automation.siemens.com/WW/view/en/68156412/133300),
"EMS400S Function Blocks" Application Manual
● "S7-1200 Automation System" system manual
(http://support.automation.siemens.com/WW/view/de/36932465/0/en)
Note
Diagnostics information can only be read from the diagnostic buffer if OB 82 is missing.
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Operating Instructions, 03/2014, A5E03474166-03
PSB modules