Siemens SIMATIC S7-1200 - Page 479

Extended instructions
9.7 Diagnostics (PROFINET or PROFIBUS)
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
479
Table 9- 176 Example 2 (continued): A module has been pulled from PROFIBUS slave device
"et200s_1". A value of 0xFF7F_1F00 is returned for MODE 4 (Module 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 0x7F Bit 15
0
111-1111 Bit 8
Byte 3 0x1F
Bit 23 0001-1111 Bit 16
Byte 4 0x00
Bit 31 0000-0000 Bit 24
Module 15 (Bit 15) is shown as missing. Modules 1 through 14 (Bits 1 through 14) and 16 through 20
(Bits 16 through 20) are shown as existing.
Table 9- 177 Example 3: PROFINET slave device "et200s_1" is disconnected (cable disconnected or
power loss) from the PROFINET network. A value of 0xFFFF_1F00 is returned for
MODE 2 (Module defective).
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 0x1F
Bit 23 0001-1111 Bit 16
Byte 4 0x00
Bit 31 0000-0000 Bit 24
The modules in slots 1 through 20 (Bits 1 through 20) are all marked as defective since the devi
ce is
missing.
MODE 5 (Problem in module) shows the same information as MODE 2 (Module defective).