Vaisala DMP248 Manual de servicio descargar pdf (Pagina 101)

APPENDIX 1 SERIAL COMMANDS__________________________________________________________

VAISALA _________________________________________________________________________ 95

SERI Serial bus settings

SERI b p d s x <cr>

b = bauds (300, 600, 1200, 2400, 4800, 9600)

p = parity (n = none, e = even, o = odd)

d = data bits (7 or 8)

s = stop bits (1 or 2)

x = duplex (H = half, F = full)

Giving the command on its own outputs the current settings:

>SERI <cr>

4800 E 7 1 FDX

The settings can be changed one parameter at a time or all parameters at once:

>SERI O H <cr> changing parity and duplex

4800 O 7 1 HDX

>SERI 600 N 8 1 F <cr>

changing all parameters

600 N 8 1 FDX

The processor does not allow the following combinations:

• no parity, 7 data bits, 1 stop bit: if this combination is given the DMP248

programme will change the number of stop bits to 2

• even or odd parity, 8 data bits, 2 stop bits: if this combination is given the

programme changes the number of stop bits to 1

NOTE

The serial bus settings become effective only after reset.

When the half-duplex mode is set, it will automatically turn the echo off. Even

then the ECHO command can indicate that echo is on.

UNIT Selecting the output units

UNIT x <cr>

x = m(etric units)

n(on-metric units)

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Vaisala DMP248 Manual de servicio Pagina 101