Siemens S7-1200 - Page 352

Extended instructions
8.5 Diagnostics (PROFINET or PROFIBUS)
S7-1200 Programmable controller
352 System Manual, 03/2014, A5E02486680-AG
Table 8- 126 Example 2: A module has been pulled from PROFINET slave device "et200s_1". A value
of 0x0300_0000 is returned for MODE 2 (Device defective).
Byte with value
Bit pattern with value
Notes
Byte 1 0x03
Bit 7 0000-0011 Bit 0
Bit 0 is true; data is available.
Byte 2 0x00
Bit 15 0000-0000 Bit 8
Byte 3 0x00
Bit 23 0000-0000 Bit 16
Byte 4 0x00
Bit 31 0000-0000 Bit 24
Device 1 (Bit 1) is marked as defective. Since the device still exists, MODE 4 (Device exists) shows
the same data as when operating normally.
MODE 5 (Problem in device) returns the same information as MODE 2 (Device defective).
Table 8- 127 Example 2 (continued): A module has been pulled from PROFIBUS slave device
"et200s_1". A value of 0xFFFF_0100 is returned for MODE 4 (Device exists).
Byte with value
Bit pattern with value
Notes
Byte 1 0xFF
Bit 7 1111-1111 Bit 0
Bit 0 is true; data is available.
Byte 2 0xFF
Bit 15 1111-1111 Bit 8
Byte 3 0x01
Bit 23 0000-0001 Bit 16
Byte 4 0x00
Bit 31 0000-0000 Bit 24
Even though device 1 (Bit 1) has an error as shown in MODE 2 (Device defective) above, the device
is still functioning on the network which causes MODE 4 (Device exists) to show the device as an
"existing device".
Table 8- 128 Example 3: PROFINET slave device "et200s_1" is disconnected (cable disconnected or
power loss) from the PROFINET network. A value of 0xFDFF_0100 is returned for
MODE 4 (Device exists).
Byte with value
Bit pattern with value
Notes
Byte 1 0xFD
Bit 7 1111-1101 Bit 0
Bit 0 is true; data is available.
Byte 2 0xFF
Bit 15 1111-1111 Bit 8
Byte 3 0x01 Bit 23 0000-0001 Bit 16
Byte 4 0x00
Bit 31 0000-0000 Bit 24
Device 1 (Bit 1) does not exist. Devices 2 (Bit 2) through 16 (Bit 16) do exist.