Vaisala HUMICAP MMT162 Guia do Utilizador descarregar pdf (Página 22)

User's Guide _______________________________________________________________________

20 ___________________________________________________________________ M210934EN-D

CHAPTER 4

OPERATION

This chapter contains information that is needed to operate this product.

Transmitter Start-Up

When the transmitter is connected to power supply, there is a delay of

five seconds as the transmitter starts up. After the start-up is complete,

the measurement data is available from the analog outputs or serial line.

If serial line output is used, note that the transmitter will behave

according to the configured serial mode:

- In STOP mode, the transmitter outputs the transmitter model and

software version. This is the default mode.

- In RUN mode, a measurement output starts immediately.

- In POLL mode, the transmitter does not output anything after power-

up.

- In MODBUS mode, the transmitter does not output anything after

power-up.

For a description of the modes, see section Set Serial Interface Mode on

page 33.

Analog Output Operation Modes

The MMT162 has two analog output channels. These channels can

function in two different modes, which can be set individually for both

channels:

1. Normal operation mode

2. Limit alarm mode

When the transmitter is ordered from Vaisala, the modes are configured

as specified in the order form. You can change the operation settings

after delivery by using serial commands and the USB cable accessory.

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