OPTO 22 SNAP PAC R SERIES, Руководство пользователя

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CHAPTER 3: SYSTEM INFORMATION
SNAP PAC R-Series Controller User’s Guide 33
Dimensions for Wired+Wireless Models
This diagram applies to Wired+Wireless R-series PACs (SNAP-PAC-R1-W and SNAP-PAC-R2-W).
INFORMATION ON FEATURES
All SNAP PAC R-series controllers offer many features, described in the following sections and summarized in
the table on
page 37 .
Digital Point Features
To configure digital point features, see the PAC Control User’s Guide . (Or PAC Manager User’s Guide, if you are not
using PAC Control. As noted below, some features require PAC Control.)
Latches —When the value of a digital input point changes from off to on, an on-latch is automatically set.
While the value of the point may return to off, the on-latch remains set until cleared, as a record of the change.
Similarly, an off-latch is set when the value of a digital point changes from on to off, and it remains set until
cleared. Latching is automatic and needs no configuration.