
IEC61131 User and Reference Manual
April 22, 2008
Device Configuration Read Only Registers
The Device configuration is stored in Modbus input (3xxxx series) registers as
shown below. The registers are read with standard Modbus commands. These
registers cannot be written to. Device configuration registers used fixed addresses.
This facilitates identifying the applications in a standard manner.
Note: These registers must not be used for other purposes in a logic or C
application.
The Device configuration registers can be enabled or disabled by entering TRUE or
FALSE in the enable input. They are disabled until enabled by a logic application.
This provides compatibility with controllers that have already used these registers
for other purposes.
The application IDs are cleared on every controller reset. Applications must run and
set the application ID for it to be valid.
The following information is stored in the device configuration. 2 logic application
identifiers are provided for compatibility with SCADAPack ES/ER controllers that
provide 2 ISaGRAF applications. The second logic application identifier is not used
with other controllers. 32 application identifiers are provided to accommodate C
applications in SCADAPack 330/350 controllers.
Controller ID (padded with nulls = 0), first byte in lowest register, one
byte per register.
Controller ID (ASCII value), first byte.
Controller ID (ASCII value), second byte.
Controller ID (ASCII value), third byte.
Controller ID (ASCII value), fourth byte.
Controller ID (ASCII value), fifth byte.
Controller ID (ASCII value), sixth byte.
Controller ID (ASCII value), seventh byte.
Controller ID (ASCII value), eighth byte.
Firmware version (major*100 + minor)
Firmware version build number (if applicable)
Logic Application 1 - Company ID (see below)
Logic Application 1 - Application number (0 to 65535)
Logic Application 1 - Application version (major*100 + minor)
Logic Application 2 - Company ID (see below)
Logic Application 2 - Application number (0 to 65535)
Logic Application 2 - Application version (major*100 + minor)
Number of applications identifiers used (0 to 32)
Identifiers are listed sequentially starting with identifier 1. Unused
identifiers will return 0.
Application identifier 1 (see format below)
Application identifier 2 (see format below)
Application identifier 3 (see format below)
Application identifier 4 (see format below)
Kommentare zu diesen Handbüchern