Update tcprtubufferedport.js
Update tcprtubufferedport.js

- the main change is dealing with the 'dual' nature of timeout event and allows users to re-try on Modbus request timeout without reconnecting TCP (typical case is the Modbus RTU device connected via Modbus TCP gateway)
- also trivial change of removing full stop to keep the message in the same format as the other messages
yaacov/node-modbus-serial,yaacov/node-modbus-serial