Plc Data Block (Db 18) - Siemens Sinumerik 840D sl Function Manual

Data Description
8.6 Interface signals
Warning
!
When setting the acknowledgment, the user assumes the responsibility of
providing suitable substitute values for the SGA of the drive, as these are no
longer valid. The user must bring the machine into a safe state.
If the acknowledgment is not made after an OB1 cycle, then the frozen SGA are
changed over from the drive to deleted SGA and the diagnostics bit "Communica-
tion failure was not acknowledged" is set. If the acknowledgment is made within an
OB1 cycle, the SGA of the drive remain frozen and the diagnostics bit "Communi-
cation failure was not acknowledged" is not set. There is no further response.
The fault situation can only be executed with POWER ON.
Communication failure was not acknowledged
Indicates whether a fault displayed using bit "Communication failure" was acknowl-
edged using the bit "Acknowledge communication failure":
0: Communication has not failed or a communication failure was acknowl-
edged.
1: Communication has failed and this was not acknowledged.
8.6.3

PLC data block (DB 18)

Parameterization part
DB 18
Data block
Byte Bit 7 Bit 6
DBB 0 8th input 7th input
byte byte
DBB1
DBB 2 8th output 7th output
byte byte
DBB 3
8-510
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
Signals for safety SPL
Interface PLC ------> PLC
Bit 5 Bit 4
INSEP valid (valid bit)
6th input 5th input
byte byte
OUTSEPvalid (valid bit)
6th output 5th output
byte byte
INSEP_ADDR (address 1st input byte)
Bit 3 Bit 2
4th input 3rd input
byte byte
4th output 3rd output
byte byte
© Siemens AG 2015 All Rights Reserved
10/15
Bit 1 Bit 0
2nd input 1st input
byte byte
2nd output 1st output
byte byte