User Manual Chapter 10
GFK-1742F Jan 2020
Introduction to Local Logic Programming 253
10.5 Connecting the Local Logic Editor to the DSM
The configuration/programming software has several communications options. One
communications option is to connect directly to the host controller SNP port, shown in
Figure 119 below. Ethernet options are also available. All DSM314 programming is done
through the software interface, yielding single point of programming for the module. (The
DSM314 also has a serial port on the module faceplate, which is used only for updating the
DSM314’s firmware.) Local Logic and Motion programs are stored to a dedicated memory
space inside the host controller CPU. The DSM314 then requests these programs by name
from the CPU during configuration. The link to the programs the DSM314 requests from the
CPU is contained in the Hardware Configuration for the host controller rack. The benefit is
that programs are not module-specific but are rack/slot specific. Thus, if there is a need to
swap DSM314s within a host controller, or to replace a DSM314, you need to perform the
following three steps: (1) turn off power to the host controller, (2) change out the DSM314
modules, and (3) reapply power to the host controller. Upon powering up, the host
controller will send the correct programs and configuration settings to the DSM314s.
Figure 119: Programmer Connection Diagram
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