Delta DVP-15MC Series, Руководство по эксплуатации

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Chapter 8 Logic Instructions
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
Output Update Timing Chart
E nable
Ope n
Va lid
L in kO pened
Cas e1
P hys ica lL in kE rro r
Cas e2 Cas e3 Ca se4 Ca se5
Case 1 When Enable changes from FALSE to TRUE, Valid changes to TRUE. When Open changes
from FALSE to TRUE, LinkOpened changes to TRUE. When Open changes from TRUE to
FALSE, LinkOpened changes FALSE. When Enable changes from TRUE to FALSE, Valid
changes to FALSE.
Case 2 When Enable changes to FALSE, Open changes to TRUE and at the moment, the outputs of
the instruction do not change. When Enable changes from FALSE to TRUE, Valid and
LinkOpened change to TRUE. When Open changes to FALSE, LinkOpened changes to FALSE.
When Enable changes from TRUE to FALSE, Valid changes to FALSE.
Case 3 When Enable changes to TRUE, Valid changes to TRUE. When Open changes from FALSE to
TRUE, LinkOpened changes to TRUE. When Enable changes from TRUE to FALSE, Valid and
LinkOpened change to FALSE. Afterwards, changing Open from TRUE to FALSE will not affect
the output result.
Case 4 When Enable changes from FALSE to TRUE, Valid changes to TRUE. If there is a problem in
the link to LAN2 of the motion controller at the moment, PhysicalLinkError changes to TRUE if
Open changes to TRUE; PhysicalLinkError does not change to FALSE if Open changes to
FALSE and Valid and PhysicalLinkError changes to FALSE simultaneously if Enable changes
from TRUE to FALSE.
Case 5 If the link to LAN2 of the motion controller is disconnected during the instruction execution,
PhysicalLinkError changes to TRUE and meanwhile LinkOpened changes to FALSE. When the
link to LAN2 of the motion controller is restored, PhysicalLinkError changes to FALSE and
meanwhile LinkOpended changes to TRUE.

Function
ETH_Link_Manage is used to start the MODBUS TCP communication. The firmware of V1.01 and
above supports the function.
1. After the input
Enable of ETH_Link_Manage changes to TRUE and Open is set to TRUE, the
MODBUS TCP data start being sent if the physical Ethernet interface of the PLC is connected normally.
As
Open changes from TRUE to FALSE, the PLC stops sending the MODBUS TCP data.
2. If Enable is set to FALSE during the instruction execution, the outputs of ETH_Link_Manage all
change to FALSE. But the PLC will not stop sending the MODBUS TCP data. The link will not be
closed until
Open is set to FALSE only as Enable is TRUE.
3. The error message from the slave or communication timeout has no impact on the instruction
execution.