PACSystems RX3i - Chapter 3: Configuration and Data Transfer; Configuration Parameters and PSM Settings

User Manual Chapter 3
GFK-2749A Jan 2020
Configuration and Data Transfer 33
Chapter 3: Configuration and Data Transfer
The PSM module is configured using the Emerson programming software. Configuration
parameters are used to set nominal values for Grid1 and Grid2 voltage, current and
frequency, and to calibrate the PSM system for specific Potential Transformer and Current
Transformer gains, increasing the accuracy of the measured values.
Configuration parameters are also used to set ANSI device threshold and delay values. A
Mode Control register, consisting of 32 bits in %Q memory, selects operational and
measurement modes. The application must apply initial values to these bits and can change
them while the PSM is running.
The application can change a single configuration parameter in run mode by modifying the
two-word Parameter Write register in %AQ memory.
Configuration Parameters 33
Data Transfer 41
Example Configurations 57
3.1 Configuration Parameters
To configure the PSM module in PAC Machine Edition under Hardware Configuration, right
click and select Add a Module, then select IC694PSM001 from the Specialty Modules tab.
3.1.1 PSM001 Settings Parameters
Parameter
Function
Status Input Address
Starting address in %I memory for the array of status flags
sent from the PSM module to the RX3i CPU. For details, see
page 41.
Status Input Length
(Read-only.) The number of %I reference addresses used
by the PSM module. 80 bits
Signal Input Address
Starting address in %AI memory for the data reported from
the PSM module to the RX3i CPU. For details, see page 45.
Signal Input Length
(Read-only.) The number of %AI reference addresses used
by the PSM module. 64 words
Mode Control Address
Starting address in %Q memory for the configuration data
that is sent every scan from the RX3i CPU to the PSM
module. For details, see page 50.
Mode Control Length
(Read-only.) The number of %Q reference addresses used
by the PSM module. 32 bits
Parameter Write Address
Starting address in %AQ memory for the location of a
single parameter and its value, which can be changed in
run mode. For details, see page 54.
Parameter Write Length
(Read-only.) The number of %AQ reference addresses
used by the PSM module. 2 words