6. Using Service Port With Terminal
Application
6.1 Connecting to Service Port
• Computer with
• Windows operating system
• Terminal application
• Free USB port
• Driver for Vaisala USB cable installed
• Vaisala USB cable for computer connection (219690)
The service port is intended for a temporary connection to the transmitter. You can use it for
configuration, calibration, and troubleshooting using a computer.
The RS-485 line of the service port is shared with the connection to RS-485 Modbus output/
output to RDP100 remote display panel; the M8 service port connector is just an additional
connector for easier access. Before plugging in the Vaisala USB cable (219690) to the service
port, perform the following steps:
1. Open the cover of the HMDW110 series transmitter.
2. If the terminal block for terminals 5 ... 8 is wired, pull it out. This disconnects the
transmitter from supply voltage and prevents possible equipment damage that may be
caused by ground loops. The locations of the terminal blocks and the service port are
shown in Component Board (page 13).
3. If the other terminal block is wired (terminals 1 ... 4), pull it out also. This prevents the
communication between the transmitter and the RDP100 remote display panel from
interfering with your connection.
6.2
Terminal Application Settings
You need a terminal application to be able to use the service port commands of the HMDW110
series transmitter. You can download the PuTTY terminal application from http://
www.vaisala.com/en/search/download or use a terminal application of your choice.
Chapter 6 – Using Service Port With Terminal Application
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