Vaisala PTB330 - Manual (Page 98)

USER'S GUIDE____________________________________________________________________
96 __________________________________________________________________ M210855EN-D
FAULT STATUS relay is usually used in conjunction with an analog
output to obtain validity information for the output value.
NOTE If a barometer loses its power, all status-based relays are released
similarly to the case of an instrument failure.
Enabling/Disabling Relays
You can deactivate the relay outputs for example for service purposes
of your system.
Setting Relay Outputs
RSEL
Use the serial line to select the quantity, setpoints, and hysteresis or
enable/disable the relay outputs. The factory setting is that all the
relays are disabled. Enter the RSEL command.
RSEL [q1 q2...]
where:
q1
= quantity for the relay 1 or Fault
q2 = quantity for the relay 2 or Fault
and so on
Use the quantity abbreviations presented in Table 2 on page 15.
Example of window limit switch:
Selecting relay 1 to follow pressure measurement and relay 2 to
follow measurement of pressure from barometer module 1. Two relay
setpoints are set for both relays.
>rsel P P1
Rel1 P below: 980.00 hPa ?
Rel1 P above: 995.00 hPa ?
Rel1 P hyst : 0.10 hPa ?
Rel1 P enabl: ON ? ?
Rel1 P1 below: 1001.00 hPa ?
Rel1 P1 above: 1005.00 hPa ?
Rel1 P1 hyst : 0.10 hPa ?
Rel1 P1 enabl: ON ?
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