Vaisala DMT143 - Manual (Page 21)

Chapter 4 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 19
CHAPTER 4
INSTALLATION
This chapter provides you with information that is intended to help you
install the DMT143.
Transmitter Configuration Before Installation
You may wish to configure your transmitter before physically installing
it. For easy access to the serial line, use the USB service cable and a
terminal program on a PC. Instructions for using the serial line and the
serial commands are provided in Chapter 5, Operation, on page 33.
Some configuration settings can also be changed using the D70 hand-
held indicator. See section Operation with DM70 Hand-Held on page 34.
Examples of configurable settings for analog output:
1. Analog output parameter and scaling.
2. Analog output error level.
Examples of configurable settings for RS-485 output:
1. By default, DMT143 transmitters are configured for single
transmitter operation. Serial operation mode is STOP and
address is 0.
To configure transmitters for operation on a common line, you
must give each transmitter a unique address (range 0 ... 255) and
set their serial operation mode to POLL.
2. The default serial line settings may not be right for your RS-485
line.
3. You may need to change the transmitter’s serial output format to
suit your needs.