Option 2: Change over to the network setpoint during operation
There are several options for change-over to the network setpoint.
Example 1: Independent of the network used, a change-over from the standard setpoint source to the network setpoint is to be possible via a digital trigger (e. g. digital input).
1.
Set a standard setpoint source different than "Network [5]" in 0x2860:001 (P201.01).
2.
Set the desired digital trigger (e. g. digital input) in via which the change-over to the network setpoint is to take place.
The current setpoint source is shown in 0x282B:002 (P125.02).
The setpoint change-over by means of the network control words is only possible if the controller is activated via the network 0x2631:037 (P400.37).
The following table describes the change-over to the network setpoint via the different network control words:
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Network control word
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Change-over to network setpoint
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NetWordIN1 data word
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Assign the function "Activate network setpoint [17]" to the bit that is to be used for activating the network setpoint.
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The functions that are to be triggered via bits 0 ... 15 of the NetWordIN1 data word are defined in 0x400E:001 (P505.01) ... 0x400E:016 (P505.16).
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Bit x
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Selection:
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0
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Standard setpoint source selected in 0x2860:001 (P201.01).
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1
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Network setpoint
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AC drive control word
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The network setpoint is activated via bit 6 of the AC Drive control word:
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Bit 6
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Selection:
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0
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Standard setpoint source selected in 0x2860:001 (P201.01).
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1
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Network setpoint
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In order that the activation via bit 6 works, "Activate network control" bit 5 must be TRUE. (Standard)!
If control is to be initiated via bit 6 without "Activate network control" bit 5, the selection "Network setpoint active [116]" must be set in 0x2631:017 (P400.17).
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LECOM control word
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The setpoint is selected via bit 0 and bit 1 of the LECOM control word:
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Bit 1
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Bit 0
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Selection:
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0
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0
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Standard setpoint source selected in 0x2860:001 (P201.01).
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0
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1
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Frequency setpoint preset 1 0x2911:001 (P450.01)
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1
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0
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Frequency setpoint preset 2 0x2911:002 (P450.02)
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1
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1
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Frequency setpoint preset 3 0x2911:002 (P450.02)
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CiA control word
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In case of control via the device profile CiA 402:
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In operating mode "CiA: Velocity mode (vl) [2]", the setpoint speed defined via the "Set speed" 0x6042 (P781.00) parameter is used.
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A changeover to an alternative setpoint source via the CiA control word is not possible.
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