Lenze 8400 TopLine - Manual (Page 1646)

19 Function library
19.1 Function blocks
1646
Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
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19.1.158 L_Sequencer_1
This FB processes a positioning program by means of a sequence table.
• The sequence table is a central component of this FB and is represented by a code with 100
subcodes where each subcode references to a program segment which is called "action".
• Different action types are available which serve to realise, for instance, program branching,
switching operation, waiting times and counters. The actions themselves are represented by
codes as well.
• The following action types are passive: "Branching", "variable branching", "switching",
"setting the counter", "counting", "time waiting" and "program end". When these action
types are being processed, the "Stop" operating mode is active and a brake, if available, will
be applied.
• The action types "positioning" and "homing", however, are active as these two action types
trigger the execution of the respective basic function via the corresponding control inputs.
• The "Stand-by" action type is active when a setpoint has been set for the speed follower or a
setpoint position is transferred to the SB LS_MotionControlKernel when "position follower"
has been selected.
Inputs
Identifier
Data type
Information/possible settings
bStart
BOOL
Start/continue positioning program
FALSETRUE The positioning program is started/continued.
• Counters and outputs are not reset automatically through this.
• A positioning program previously interrupted by bBreak is
continued with the sequence step.
• The started positioning program is processed up to its program
end even if bStart is reset to FALSE again.
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