FD67 Profibus-DP Manual
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7.3.2.4 Channel-related diagnosis bytes 29 to 31 and following
Three bytes are assigned in the diagnosis message for each channel-related diagnosis. If, for example, 5
channel-related diagnosis are available, a total of 5 * 3 = 15 bytes of channel-related diagnostic
information.
Byte 29
ID number
7 6 5 4 3 2 1 0
ID number 0..63
Reserved for 10
Byte 30
Channel number
7 6 5 4 3 2 1 0
Reserved for 0..63. FD67 : 00..07 (Pin 4) or 10..17 (Pin 2)
Input/output
00 = reserved
01 = input
10 = output
11 = input/output
Byte 31
Fault type
7 6 5 4 3 2 1 0
Fault type (see Chapter 8.3.6)
01
hex
(01
dez
)
Short-circuit (in sensor supply
)
06
hex
(06
dez
) Line breakage
07
hex
(07
dez
) Upper threshold overshot
08
hex
(08
dez
) Lower threshold undershot
17
hex
(23
dez
) Actuator warning
18
hex
(24
dez
) Actuator cut-off
1A
hex
(26
dez
) External fault
Input/output
000 = reserved
001 = bit
010 = 2 bits
011 = 4 bits
100 = byte
101 = word
110 = 2 words
111 = reserved