Structure Of The Diagnostics Frame - Siemens ASM 456 Operating Instructions Manual

6.3

Structure of the diagnostics frame

When using device-relate diagnostics, it can be evaluated using the table below.
The diagnostics frame consists of 6 bytes of standard diagnostics and 18 bytes of
diagnostics extension.
For the ASM 456, the diagnostics extension is designed as a status PDU for device-related
diagnostics. The structure complies with the PROFIBUS Profile Guideline (PROFIBUS Proxy
Guideline, Identification Systems Proxy Ident Function Block) for Identification Systems with
MOBY-specific additional information.
Byte
PROFIBUS Profile Guideline for Identification Systems
6
7
8
9
10
11
12
13
14
MOBY-specific additional information
15
16
17
18
19
20
21
22
23
With FB 45 the value is = 0, because the error code is mapped only in byte 4.
1)
ASM 456 interface module
Operating Instructions, 07/2015, J31069-D0162-U001-A6-7618
Name Contents
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 See Profile Guideline
error_code_1 See Profile Guideline
error_code_2 See Profile Guideline
moby_code_1 MOBY error code byte 1
moby_code_2 MOBY error code byte 2
moby_code_3 MOBY error code byte 3
moby_code_4 MOBY error code byte 4
meldecode Error code for diagnostics messages (see GSD file)
counter_high Continuous event counter high-order byte
counter_low Continuous event counter low-order byte
fw_version_high Firmware version high-order byte
fw_version_low Firmware version low-order byte
6.3 Structure of the diagnostics frame
00b: Identifier for device-related diagnostics
010010b (18d): Length of the extension including header
1b: Identifier for status (0 = alarm)
1d: Type for status message
0d: Device in total
Reserved
00b: No further differentiation
10b: Status inactive (outgoing)
01b: Status active (incoming)
11b: Reserved
1d: Relating to reader 1
2d: Relating to reader 2
1)
1)
1)
Diagnostics
47