Allen-Bradley Micro800 General Instructions Manual page 211

Parameter Data type
MsgTimeOut UDINT
ConnTimeOut UDINT
ConnClose BOOL
Description
Message timeout (in milliseconds). Amount of time to wait for a reply for an initiated command.
• 250-10,000
• Set to 0 to use the default value 3000.
• A value less than 250 (minimum) will be set to 250.
• A value greater than 10,000 (maximum) will be set to 10,000.
See also Modbus/TCP message timeout timers
TCP Connection establishment timeout (in milliseconds). Amount of time to wait for establishing successful TCP connection to
the Target device.
• 250-10,000
• Set to 0 to use the default value 3000.
• A value less than 250 (minimum) will be set to 250.
• A value greater than 10,000 (maximum) will be set to 10,000.
See also Modbus/TCP message timeout timers
TCP connection closing behavior.
• True: Close the TCP connection upon message completion.
• False: Do not close the TCP connection upon message completion [Default].
See also Modbus/TCP message connections
Modbus/TCP message timeout timers
The following table describes how timers for MODBUS2TARPARA timeout
parameters (UcmmTimeout and ConnMsgTimeout) behave based on message
requests and status.
Action
Message is enabled
Connection is requested
ConnMsgTimeout timer is active
Connection request is completed
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015
Communication instructions
on page 211.
on page 211.
on page 211.
Results
UcmmTimeout timer is activated
ConnMsgTimeout timer is activated
UcmmTimeout timer is disabled
UcmmTimeout timer is reactivated
Chapter 9
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