Specifications

8 Chapter 2 - Controller Jumper Settings
power-on configuration, and then software used to adjust parameters at any time.
A DOS software setup utility is included on the SmartSet Companion Disk for this
purpose, or you can write your own code with the information provided in this
manual. Options selected through software can be stored in the controllers'
nonvolatile memory (NVRAM) as power-on defaults.
One jumper (J7) specifies which set of power-on defaults are used. If the jumper is
installed, the controller boots with the settings specified by the jumpers, and
ignores the equivalent NVRAM settings. If the jumper is removed, the controller
boots using the settings in NVRAM and ignores the jumpers. If the communication
settings in NVRAM are ever disturbed or unknown, the NVRAM settings can be
restored by rebooting from the jumper settings, reprogramming the proper settings
in NVRAM, and then removing the jumper.
Software setup is more flexible as only a limited number of options are available
through jumpers. The software setup utility can save all settings to a disk file, then
program other controllers to the identical power-on settings with a single
command.
Selecting Power-On Settings with Jumpers
Jumper blocks may have a horizontal or vertical orientation, as shown in Figure 2-
1. The figure shows jumpers installed normally for J1 and J7. Because some
jumpers work in tandem with others, a cross-connection may also be significant. A
valid cross-connection is shown between J2 and J3. Jumpers with an invalid cross-
connection, as with J5 and J6, have no effect and are available as extra jumpers.
Figure 2-1. Jumpering SmartSet Controllers
Selecting Power-On Settings from NVRAM
Jumper J7 must not be installed to enable power-on settings from NVRAM. For
information on the software setup utility SMARTSE**T.EXE, see Chapter 4.
NOTE
To enable use of the jumpers, J7 must be installed. If J7 is not installed, power-on
settings are from NVRAM.