Husky MP2500 Manual page 160

Notes
The timeout is initiated by a request for serial output by an application. If the
application fails to put a character in the transmit buffer (because it is full)
within the specified time limit, a communications error will occur.
If no attempt is made to transmit data, this timeout will not occur.
Setting
Off
1..60 Timeout after 1 to 60 seconds.
Note: If an optional protocol is being used which has its own timeouts,
disable the TX timeout.
138
Result
No timeout.
H MP2500 System Developer's Guide
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