Programmable Parameters - Advanced Micro Controls Inc. 1700 Series User Manual

Chapter 1 Series 1700 Introduction
The remainder of this chapter introduces the many programmable features of the
1700 modules. It also introduces backplane programming concepts that allows
you to control the module from the processor instead of using the modules
keyboard and display.

Programmable Parameters

A 1700 module is configured by setting its programmable parameters. Parameters are
broken into two groups.
hý Transducer Setup Parameters - Six parameters that affect the position and
tachometer data of each transducer. Multi-channel modules repeat these parameters
for each transducer. For example, if you have a four channel module, you will have
four Scale Factor parameters, one for each transducer. These parameters are
programmable from the keyboard or the processor.
hý Module Setup Parameters - Five parameters that sets module communication with
the processor and the type of resolvers attached to the card. There is only one of each
of these parameters. They are not repeated for each transducer of multi-channel
modules. They are programmable only from the keyboard.
Programmable parameters are stored in the modules nonvolatile memory. Therefore, you do
not have to configure the module after every power up. Prior to hardware revision H of the
module, the nonvolatile memory was EEPROM. This technology has the advantage of
retaining programmed values for over 100 years. Its disadvantage is its limited number of write
cycles, approximately ten thousand, before the memory will begin to fail.
With revision H, the nonvolatile memory has been changed to battery backed, non-volatile,
static RAM (nvRAM). The battery in nvRAM is rated for ten years but the nvRAM has an
unlimited number of write cycles. The nvRAM has the additional advantage of significantly
decreasing the time needed to store new parameter values.
-05 option
Prior to hardware revision H, customers could order modules with nvRAM instead of
EEPROM by adding "-05" to the end of the part number. This practice has been eliminated
because nvRAM is now standard on the modules. If your module is a replacement for an older
"-05" module, it will work correctly.
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