Siemens 6ES7155-6AA01-0BN0 - Page 38

Interrupts, diagnostics, error, and system messages
5.3 Alarms
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
36 Equipment Manual, 10/2020, A5E03576904-AE
Data block name
Content
Comment
Bytes
Followed by 2 reserved bytes:
Reserved
1
Reserved
1
USI structure = W#16#0006
Table 5- 13 USI structure = W#16#0006
Data block name
Content
Comment
Bytes
USI
W#16#0006
Manufacturer-specific diagnostics if an I/O module is in-
stalled on an incorrect BaseUnit.
Result: Station stop
• The I/O modules fail → substitute value behavior
• The interface module continues to exchange data with
the IO controller.
2
Followed by the slot for the I/O module:
Slot
W#16#0001 to
W#16#0020
Bit 8 to 15
1
Bit 0 to 7
1
Followed by 2 reserved bytes:
Reserved
1
Reserved
1
USI structure = W#16#0007
Table 5- 14 USI structure = W#16#0007
Data block name
Content
Comment
Bytes
USI
W#16#0007
Manufacturer-specific diagnostics if operation is not possi-
ble with existing bus configuration
Result: Station stop
• The I/O modules fail → substitute value behavior
• The interface module continues to exchange data with
the IO controller
2
Followed by the slot for the I/O module:
Slot
W#16#0001 to
W#16#0040
Bit 8 to 15
1
Bit 0 to 7
1
If slot 0 is specified, check the width of the station configuration (maximum 1 m).
Followed by 2 reserved bytes:
Reserved
1
Reserved
1