Microsensor MPM4706 Operation Manual page 8

a) Connect power to the transmitter correctly in accordance with the
Table 1 connection diagram in Section 4.1.
b) Then connect the RS485 communication line with the RS485
communication module as per the diagram of Table 1 in Section 4.1.
c) Following the above 2 steps, connect the RS485 module to the
computer, then run the "47XX" communication software, click on the
"Refresh", select correct " Serial Port". "The serial port number
should be consistent with the port number of the RS485
communication module used in the "Device Manager" of the
computer and click on "Protocol" in the upper left corner of the
software interface and select " R4-ASCII" or "R8-MODBUS" based
on the sensor module.
d) After selecting the correct serial port number, choose the baud rate
of the product (the factory default baud rate is "9600"), and click the
"Open Serial Port" button, then click the "Search" button. The
software will automatically search for the transmitter, and when the
transmitter is found, the bottom of the software will prompt the online
transmitter number "X online".
e) The real-time pressure and temperature values can be displayed by
clicking the "Acquisition" button.
4.3.1.2 How to Modify Transmitter Parameters?
After the "47XX" software reads the product parameters successfully, if
users need to modify the product parameters, please refer to the
following methods.
a) Zero Adjustment: when there is a slight shift in the zero-pressure
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