Specifications

Allen-Bradley ControlLogix Ethernet Driver Help
CO Boolean Read/Write
EN Boolean Read/Write
RN Boolean Read/Write
EW Boolean Read/Write
ER Boolean Read/Write
DN Boolean Read/Write
ST Boolean Read/Write
BK Boolean Read/Write
Ranges
PLC Model File Number Max. Element
MicroLogix 3-255 255
All SLC NA NA
PLC5 Message Files Message Files
Examples
Example Description
MG14:0.TO Ignore if timed out bit of MG 0 file 14
MG18:6.CO Continue bit of MG 6 file 18
Message Files
Message files are a structured type whose data is accessed by specifying a file number, an element, and a field.
The default data types are shown in bold.
PLC-5 Syntax
Syntax Data Type Access
MG<file>:<element>.<field> Depends on field Depends on field
The following fields are allowed for each element. For the meaning of each field, refer to the PLC's documentation.
Element Field Data Type Access
ERR Short, Word Read/Write
RLEN Short, Word Read/Write
DLEN Short, Word Read/Write
EN Boolean Read/Write
ST Boolean Read/Write
DN Boolean Read/Write
ER Boolean Read/Write
CO Boolean Read/Write
EW Boolean Read/Write
NR Boolean Read/Write
TO Boolean Read/Write
Ranges
PLC Model File Number Max. Element
MicroLogix NA NA
SLC 500 Fixed I/O NA NA
SLC 500 Modular I/O NA NA
PLC-5 Series 3-999 999
Examples
Example Description
MG14:0.RLEN Requested length field of MG 0 file 14
MG18:6.CO Continue bit of MG 6 file 18
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