Vaisala DMP248 Service Manual download pdf (Page 130)

APPENDIX 4 ________________________________________________________________________

124 ____________________________________________________________________ U263EN-1.4

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 without address until CLOSE command is given.

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

than one line at a time.

Use command ? to find out the settings of the active transmitter:

? <cr>

DMP 248 /1.01

CPU serial nr : 0

Keyboard type : 0

Address : 7

Output units : metric

Baud P D S : 4800 E 7 1 FDX

Serial mode : STOP

Output intrv. : 0 min

Mtim : 32

Pressure : 1013.25

Analog outputs

Ch1 0.00 ... 10.00 V

Ch2 0.00 ... 10.00 V

Ch1 ( RH ) lo 0.000 %RH

Ch1 ( RH ) hi 100.000 %RH

Ch2 ( T ) lo -20.000 ’C

Ch2 ( T ) hi 180.000 ’C

Transducer :

PRB serial nr : 0

Calibr. date : 0

1 2 ... 125 126 127 128 129 130 131 132 133 134 135 ... 144 145

No comments

Vaisala DMP248 Service Manual Page 130