K1: Mode group, channel, program operation, reset response
9.4 Channel
Basic Functions
494 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Channel-specific technology specification
The technology used can be specified for each channel:
MD27800 $MC_TECHNOLOGY_MODE
In the delivery state, machine data are active for milling as standard.
Spindle functions using a PLC
In addition to function block FC18, spindle functions can also be started and stopped via the axial NC/PLC
interface signals in parallel to part programs that are running.
Preconditions:
• Channel status: "Interrupted" or "RESET"
• Program status: "Interrupted" or "canceled"
The following functions can be controlled from the PLC via interface signals:
• Stop (corresponds to M5)
• Start with clockwise direction of rotation (corresponds to M3)
• Start with counter-clockwise direction of rotation (corresponds to M4)
• Select gear stage
• Positioning (corresponds to M19)
For several channels, the spindle started by the PLC is active in the channel to which it is assigned at the start.
For more information about the special spindle interface, see:
References:
/FB1/ Function Manual, Basic Functions; Spindles (S1)
PLC-controlled single-axis operations
An axis can also be controlled from the PLC instead of from a channel. For this purpose, the PLC requests the
axis from the NC via the NC/PLC interface:
DB31, ... DBX28.7 = 1 (PLC controls axis)
The following functions can be controlled from the PLC:
• Cancel axis/spindle sequence (equivalent to delete distancetogo)
• Stop or interrupt axis/spindle
• Resume axis/spindle operation (continue the motion sequence)
• Reset axis/spindle to the initial state
For a detailed description of these stand-alone single axis operations, refer to:
References:
/FB2/ Function manual, Basic functions; Positioning axes (P2)
For additional information on the channel-specific signal exchange (PLC → NCK), see:
References:
/FB1/ Function Manual Basic Functions; PLC Basic Program (P3)
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