Rockwell Automation 9301 Series RSView32 Users Guide - Manual (Page 50)

2–10
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RSView32 User’s Guide
Messages
Type a number between 1 and 10. This is the number of messages
RSView32 will send on a channel before requiring a reply. These
messages are stored in the buffers of the programmable controllers
on the channel (each controller has its own buffer). If a buffer
overflows at runtime, a communication error is generated. If this
happens, reduce the number of messages.
The Messages field applies to both the primary and secondary
communication drivers.
Primary and Secondary Communication Drivers
The primary driver is the one your system will use most of the
time. By default, this driver is the active driver. The secondary
driver is a backup. Primary and secondary drivers must use the
same network type.
To specify a driver, select the appropriate driver from the list. This
list contains the drivers installed and running in RSLinx that are
valid for the selected network type.
To configure communications without the appropriate hardware or
software installed, select None Loaded as the driver.
To test your project without the appropriate hardware installed, see
“Developing your project without a communication network” on
page 2-22.
For details about configuring drivers, see “Configuring RSLinx
drivers” on page 2-5.
Do not select a secondary communication driver for TCP/IP or
TCP/IP Bridge channels. To create communications
redundancy, use a second Ethernet card and configure each
card uniquely in Windows. Then use the NodeSwitch command
at runtime to change the IP number if communication errors are
detected.
IMPORTANT