Rockwell Automation 1752-L24BBBE SmartGuard 600 Controllers User Manual - Manual (Page 82)

82 Rockwell Automation Publication 1752-UM001E-EN-P - June 2014
Chapter 7 Configure Your Controller for DeviceNet Communication
• Timeout Multiplier – The Timeout Multiplier determines the number
of RPIs to wait for a packet before declaring a connection timeout. This
translates into the number of messages that may be lost before a
connection error is declared. For example, a Timeout Multiplier of 1
indicates that messages must be received during every RPI interval. A
Timeout Multiplier of 2 indicates that 1 message may be lost as long as
at least 1 message is received in 2 times the RPI
(2 x RPI).
• Network Delay Multiplier – The Network Delay Multiplier defines the
message transport time that is enforced by the communication
protocol. The Network Delay Multiplier specifies the round trip delay
from the producer to the consumer and back to the producer. You can
use the Network Delay Multiplier to reduce or increase the Connection
Reaction Time Limit in cases where the enforced message transport
time is significantly less or more than the RPI.
8. From the File menu, choose Save to save your configuration.
Change an I/O Connection
If you delete a connection to a DIO module after the logic has been written, you
must go back to your logic and verify or adjust the tags in your program to the
correct function blocks. Take note of the safety connections and mappings before
deleting or restoring the connections. Verify these connections before you run the
logic in your application.
Follow this procedure to change your safety connections.
ATTENTION: When logic is programmed using distributed I/O modules (DIO)
with the SmartGuard controller, and you delete (or delete and re-add) a safety
connection to a DIO module, the remote I/O connections in the logic editor will
be flagged as invalid and could be moved to the wrong function block. You will
not be able to download until these errors are corrected.