M251 Logic Controller Description
The M251 Logic Controller has various powerful features and can service a wide range of applications.
Software configuration, programming, and commissioning are achieved with the EcoStruxure Machine Expert software described in the EcoStruxure Machine Expert Programming Guide and in the M251 Logic Controller Programming Guide.
The M251 Logic Controller is configured and programmed with the EcoStruxure Machine Expert software, which supports the following IEC 61131-3 programming languages:
oST: Structured text
oFBD: Function block diagram
oSFC: Sequential function chart
EcoStruxure Machine Expert software can also be used to program this controller using CFC (continuous function chart) language.
The power supply of the M251 Logic Controller is 24 Vdc.
The M251 Logic Controller includes a Real Time Clock (RTC) system.
The M251 Logic Controller can be operated externally by the following:
oa hardware Run/Stop switch
oan EcoStruxure Machine Expert software command
This table describes the different types of memory:
|
Memory Type |
Size |
Used |
|---|---|---|
|
RAM |
64 Mbytes, of which 8 Mbytes available for the application |
To execute the application. |
|
Flash |
128 Mbytes |
To save the program and data in case of a power interruption. |
M251 Logic Controllers include an embedded SD card slot.
The main uses of the SD card are:
oInitializing the controller with a new application
oUpdating the controller firmware
oApplying post configuration files to the controller
oApplying recipes
oReceiving data logging files
Embedded Communication Features
The M251 Logic Controller native communication ports include (depending on the controller reference):
oCANopen Master
Expansion Module and Bus Coupler Compatibility
Refer to the compatibility tables in the EcoStruxure Machine Expert - Compatiblity and Migration User Guide.
