ABB DSQC679 3HAC028357-001 High Speed Local Area Network Connection Module

DSQC679 3HAC028357-001

D2-08TD2 – 8 pt. 12-24 VDC current sourcing output module, 1 common (2 common terminals), 0.3A/point, 2.4A/module, fused per common (non-replaceable), removable terminal


D2-16ND3-2 – 16 pt. 24 VDC current sinking/sourcing 2 commons (isolated), European type removable terminal

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DSQC679 3HAC028357-001 High Speed Local Area Network Connection Module

DSQC679 3HAC028357-001 As a high-speed local area network, the remote i/o must support applications with stringent time requirements. plc uses a coherent communication method to serve each node, and the i/o sub-station is always updated within a defined time range, and calculations are made within that time range based on the user’s logical programme segment number. To ensure that information does not conflict, each node transmits on the network only within a defined time range, rather than data from several nodes being transmitted at the same time.

DSQC679 3HAC028357-001 requires strict anti-interference measures for the system. This is very important in the design and implementation phase of the project. Because the remote i/o is connected to the equipment layer, and the information transmission between the plc and the remote station is carried out in a strict time period, any interference may cause the state and action commands of the input/output devices not to be transmitted and executed correctly, thus resulting in the system malfunctioning, or even equipment accidents.

The communication between the DSQC679 3HAC028357-001 cpu master and the 3# remote station is intermittent. During the period of communication interruption, the 3#cylinder to mixing-13 belt in 3# station could not receive the operation information of mixing-3 belt, so the 3#belt was shut down by mistake, which caused the 3#cylinder to mixing-13 belt to stop in automatic sequence. When the communication was restored, the running information of the 3# belt was received normally, and the 3# cylinder to mix-13 belt started again automatically. As a result, the process equipment in this section frequently starts/stops automatically.