Rockwell Automation 2706-PRIO_PDH485_PDHP_PDNET_PCNET_PENET_PENET1 InView Communication Module User Manual - Manual (Page 94)

Publication 2706-UM017C-EN-P - March 2006
4-44 Application Guide
• Variable Array Size. The size of the array (16 to 128 characters
for RIO) containing the variable data. The maximum array size is
dependent on the controller and must be an even integer.
The address tags are either an Integer (N) or ASCII (A) data file. Both
the Message Trigger and Message Data addresses must fall entirely
within its designated block transfer, including the Message Data array
size.
Block Transfer Parameters
• Address. The starting address (in the correct controller format)
of the message data for the Block Transfer Read or Block
Transfer Write.
• Length. The number of words to transfer (1 to 62, or 64). The
InView display uses Length to identify the message blocks. You
must configure 2 block transfers (only 2). The first block, labeled
Message, contains both the Message Trigger and Data addresses.
The second block, labeled Variable, contains the Variable Trigger
and Variable Data addresses. Word 63 is reserved for the RIO
Pass-through.
IMPORTANT
Variable Trigger and Variable Data addresses work
the same as Variable Array Size.