Vaisala DMP248 Wartungshandbuch PDF herunterladen (Seite 120)

APPENDIX 3 ________________________________________________________________________

114 ____________________________________________________________________ U263EN-1.4

>send 22

RH= 24.4 %RH T= 29.1 ’C

•

Disconnect the terminal.

• Check that the jumpers in connector X4 are in the right places.

X1 X2

• Remount the RS 485/422 serial module.

• Close the cover.

• Repeat this setting procedure with each transmitter.

• When all transmitters on the network have been configured,

switch them off.

Checking the serial port network operation

Normally measurement readings are asked when the transmitter is in

POLL mode; then the command must include the address of the

transmitter. If the settings of the transmitter need to be changed, the

transmitter is switched to STOP mode with command OPEN;

commands can then be given without address. When the line to the

transmitter is closed, it returns to POLL mode.

STOP mode

Open the line to the transmitter:

open 22<cr>

DMP 22 line opened for operator commands

Transmitter no. 22 is now temporarily set to STOP mode; it accepts

commands sent without address until CLOSE command is given.

Individual settings can now be easily modified. Do not open more

than one line at a time.

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Vaisala DMP248 Wartungshandbuch Seite 120