Yokogawa YVP20S - Manual (Page 175)

App-6
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IM 21B04C50-01E
Appendix B Configuring DI Blocks to TB Channels
There are two DI (discrete input) blocks in YVP. They are used to communicate the state of
internal (software) limit switches. The DI modes are displayed in IVI and the internal
variables can be viewed with the Query service.
To activate the DI blocks, each block must be scheduled (though not necessarily linked)
and each must be configured to the correct channel in the TB. In an FB configurator set the
DI channel parameter. Channel 2 should be assigned to the High limit switch DI1, and
channel 3 should be assigned to the low limit switch, DI2.