WMA-5 Operation Manual V. 1.01
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Where,
YY is the last 2 digits of the clock year.
MM is the 2 digit month.
DD is the 2 digit day.
W is the WMA Id (0-9).
I is the increment of the file if there is more than one file created for a day.
Each time the memory stick is removed and then reinserted or the instrument is powered off then on, a
new file is created and the increment ‘I’ is increased.
Refer to the Error Messages for the WMA-5 table below for disk errors.
Digital Connection Methods
There are three ways to connect to the WMA-5 for viewing digital data: the USB port, the RS232 port and
the WiFi Option (if installed).
USB
A USB cable is factory installed in the WMA-5 that allows the WMA-5 to be connected to any USB host
device such as a PC, laptop or tablet. USB communication is appropriate when the connecting device is
within 2 meters of the WMA-5. This cable is connected inside the WMA-4 into the terminal block. If the
cable is removed for any reason, then reconnect the three wires as follows:
USB cable wire color
WMA-5 Terminal block label
Black
GND
Yellow
RX 3.3V
Orange
TX 3.3V
The COM port settings for the USB module to communicate with the WMA-4 controller are: 19200 baud, 8
bit, 1 stop, no parity. By default the WMA-5 is set to utilize the USB port for serial communication. If
needed, the selection of the USB port can be changed or reset in Main > Miscellaneous > More > Port.
RS232
For longer distance direct communication, a standard RS232 output is available which allows
communication with a computer or data logger up to approximately 60 meters away. The physical
connection is to the terminals labeled GND, TX RS232, and RX RS232. The port settings are 19200
baud, 8 bit, 1 stop, no parity, and no hardware or software flow control. The RS232 port is selected as
active in Main > Settings > Host Port > RS232. The USB cable must be left unconnected to a PC (or
disconnected from the WMA-5 completely) when using the RS232 interface.
Terminal Block Label
Data Direction
Standard PC 9 pin D connector pin
RX RS232
WMA-5 to External host
Pin 2
TX RS232
External Host to WMA-5
Pin 3
GND
-
Pin 5
Wireless
When the WiFi option is installed in the WMA-5, there are two additional connection methods available:
First, a direct wireless connection (up to 15m) between any wireless device (phone, tablet, laptop) and
the WMA-5 can be made without any additional hardware or routers. Second, the WMA-5 can be
connected to the customer’s wireless router which joins the WMA-5 into the customer’s Local Area
Network (LAN). Once the WMA-5 is connected to a LAN, any computer or device on that LAN can
access it, and potentially additional connections to any device on the Internet at large can be made if the
user’s LAN firewall and security protocols permit.