Siemens SINUMERIK 840DE SL - 2.1.9 Signals from axis;spindle (DB31,...)

Detailed Description
2.1 Various interface signals and functions (A2)
NC/PLC Interface Signals (Z1)
2-42 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2.1.9 Signals from axis/spindle (DB31, ...)
DB31, ...
DBX61.0 Drive test travel request
Edge evaluation: no Signal(s) updated: cyclic
Signal state 1 or
edge change
0 → 1
The control signals that all of the traversing conditions for the drives are fulfilled.
Prerequisites for this are:
• The mechanical brake of the axis involved was previously released and all other axis traversing
conditions are fulfilled.
With:
DB31, ... DBX61.0 (drive test, travel request) = 1 signal
the appropriate axes can be moved.
• The axis disable:
DB31, ... DBX1.3 (axis/spindle disable) = 1 signal
is not active.
Signal state 0 or
edge change
1 → 0
The control signals that the axes cannot be moved.
Axes cannot be moved for:
• DB31, ... DBX61.0 (drive test, travel request) = 0 signal
• In the control when faults are present
This means that the prerequisites specified above are not fulfilled.
Further references /IAD/ SINUMERIK 840D Installation and Startup Guide; Chapter: SIMODRIVE 611D
or
/IAC/ SINUMERIK 810D Installation and Start-up Guide
DB31, ...
DBX61.3 Follow-up mode active
Edge evaluation: no Signal(s) updated: cyclic
Signal state 1 or
edge change
0 → 1
The control signals that the follow-up mode for the axis/spindle is not active.
Prerequisites for this are:
• The controller enable for the drive has been withdrawn (either by the PLC with "controller
enable" = 0 signal or inside the control for faults; refer to the references)
• Follow-up operation is selected (either by the PLC with IS "follow-up operation" = 1 signal or in
the control, e.g. when withdrawing the controller enable from an axis that is moving)
The position setpoint continually tracks the actual value while the follow-up mode is active.
Zero speed and clamping monitoring are not active.
Signal state 0 or
edge change
1 → 0
The control signals that follow-up mode for the axis/spindle is not active.
Zero speed and clamping monitoring are active.
This means that the above specified prerequisites are not fulfilled.
In the "hold" state, the interface signal:
DB31, ... DBX61.3 (follow-up mode active)
is 0.
Special cases,
errors, ....
Notice:
A delete distance-to-go is triggered internally in the control on transition from "Follow-up" to "Hold"
(IS "Follow-up mode" = 0) or in the closed-loop control mode (IS "Controller enable" = 1).