Rockwell Automation AADvance Controller Configuration Guide - Manual (Page 252)

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11-4 Document: 553633
ICSTT-RM405f-EN-P
Issue 07
Configuration Guide (AADvance Controller)
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The subnet DPXPNC40 set up screen is displayed.
4) Enter the following data in the required fields.
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Network Interface - enter which processor slice (Processor A, B or C)
the peer network will be configured on, i.e. which processor module the
network is physically connected to.
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Response Timeout - Enter a value in the range 0 to 10000ms. This value
sets the time allowed for the peer to acknowledge a data packet. If the field is
set to zero this indicates that no acknowledgment is required. It should only be
set to a value above zero to avoid network packet sequence errors in
networks where the propagation delay between any two nodes could exceed
1ms.
If the entire Peer-to-Peer network is on a local Ethernet network with no
routers or gateways, this setting may be zero. If the network is not a simple
local network, set this parameter to exceed the longest expected propagation
delay between any two nodes. The 'ping' command may be used to measure
delays once the network is built. If the parameter is not zero, an
acknowledgment is expected for every packet, to ensure it has been delivered.
This is in addition to the basic acknowledgment automatically provided by the
TCP protocol. The Response Timeout acts as a watchdog trip for a lost
packet, and it should be the shortest of the timeout settings.