Allen-Bradley SMC-50 - Analog Outputs; DeviceLogix Scratchpad Registers; Program Examples

Rockwell Automation Publication 1560F-UM001A-EN-P - June 2019 275
Using DeviceLogix Appendix G
Analog Outputs
Available analog outputs from the DeviceLogix program are all 32-bit integers
and include the data points in Table 76
.
Table 76 - Analog Output Data Points
Tips
Data Types
The DeviceLogix implementation supports 32-bit integers only.
DeviceLogix Scratchpad Registers
The SMC-50 control module provides 2 input (parameter #335, #336) and 2
output (parameter #343, #344) scratchpad registers. The input parameters can
be written by any configuration or network device and used as an input to
DeviceLogix. The output parameters can be written by DeviceLogix and
displayed on configuration devices or read using network devices.
SMC-50 Control Module DeviceLogix Input Datalinks (P337…P342)
The SMC-50 control module provides parameters directly to DeviceLogix as
analog inputs. Additional parameters from the host and expansion cards can be
made available through the DeviceLogix Datalink inputs. The value of the
parameter linked to by the datalink is made available to DeviceLogix. For
example, configuring a datalink to “Mtr Therm Usage” (parameter #18) would
make the motor thermal usage value available to DeviceLogix.
Program Examples
Example 1: Selector Switch Operation
This example demonstrates how a selector switch could be used to select one or
four parameters to write to one of the scratchpad output parameters.
Table 7 7
represents the inputs and outputs for a 4 position selector switch.
Analog Outputs Name Description
(2) Network Analog Outputs A Out 1 – A Out 2 General-purpose Output parameters (Param #343, #344)