Diagnostics Via S7 Controller - Siemens SIMATIC RF166C Operating Instructions Manual

Service and maintenance
10.1 Diagnostics
Differentiation of diagnostic interrupt messages
With the diagnostic interrupt messages, a distinction is made between incoming and
outgoing diagnostic interrupts.
● Incoming diagnostic interrupt
An event occurs and triggers an alarm.
● Outgoing diagnostic interrupt
The event is no longer current, a diagnostic message is output. For events that only exist
momentarily, the reset is delayed by 3 seconds.
10.1.7

Diagnostics via S7 controller

Structure of the diagnostics frame
You also have the option to read out the diagnostic information via the OB82 of the S7
controller. The diagnostics frame consists of 6 bytes of standard diagnostics and 18 bytes of
diagnostics extension. The structure complies with the PROFIBUS Profile Guideline
(PROFIBUS Proxy Guideline, Identification Systems Proxy Ident Function Block) for
identification systems.
Table 10- 5
Byte
PROFIBUS Profile Guideline for Identification Systems
6
7
8
9
10
11
12
13
14
132
Structure of the diagnostics frame
Name Description
sign_len Bit 7..6
Bit 5..0
status_type Bit 7
Bit 6..0
slot_number Bit 7..0
specifier Bit 7..2
Bit 1..0
channel_num Bit 7..0
function_num See Profile Guideline
error_decode Error message of Ident profile
error_code_1 Error message of Ident profile
error_code_2 Error message of Ident profile
0x00: Identifier for device-related diagnostics
0x12: Length of the extension including header
0x00: Identifier for status (0 = alarm)
0x01: Type for status message
0x00: CM
0x0X: Reader which is connected to the selected interface.
Reserved
0x00: No further differentiation
0x02: Status inactive (outgoing)
0x01: Status active (incoming)
0x03: Reserved
0x00: All reader channels
0x0X: Channel number of the reader
Operating Instructions, 12/2019, C79000-G8976-C578-01
SIMATIC RF166C