User Manual Manual

Publication 2706-UM017C-EN-P - March 2006
Application Guide 4-41
• Variable Array Size. The size of the array (16 to 254 characters
for a ControlLogix controller) containing the variable data. The
maximum array size is dependent on the controller and must be
an even integer.
The address tags are a SINT data type, however they can be named
anything provided it follows this syntax: Name[element number]. Both
the Message Trigger and Message Data addresses must fall entirely
within a single 254 byte block, including the Message Data array size.
You can choose to use any name, but you cannot use more than one
data file. For example, a Message Trigger address of Message_data[0]
and a Message Data address of Message[1] is not valid. At the same
time, a Message Trigger address of Message_data[0] and a Message
Data address of Message_data[250], with a Message Data array size of
16, is not valid because the array falls outside of the 254 byte block.
RIO Communication and
Tag Setup Screens
The InView Message Display communicates with the following
controllers on a Remote I/O network.
• PLC-5 controller
• SLC 5/03, 5/04 or 5/05 controller with a 1747-SN/B scanner
• ControlLogix controller
IMPORTANT
Variable Trigger and Variable Data addresses work
the same as Variable Array Size.