User manual

905U Wireless I/O Module User Manual
105S Serial I/O Module
Page 44 © October 2001
radio channel, which results in
increased communication failures and
poorer performance of the system. To
change an update time, select
“Update Times” on the left-hand
menu and double-click the selected
input. The update time will be shown
in days:hours:minutes:seconds.
Change the values in each field. The
display also shows the maximum and
minimum values. For the -1, -2 and
–3 modules, the maximum update
time is 16 minutes, however the
update time for -4 inputs can be up to
5 days.
If a zero value is entered as an update
time, then the input will not update at
all.
Changing Multiple Settings
You can change the Update Times of several inputs simultaneously by using the <Shift> Select feature.
For example, if you want to change all digital inputs to 1 minute update, you could change each
individually, or you could “block” the four digital inputs using the “Shift” Select feature and select
“Edit”. You only need to enter the change once to change all of the inputs selected. This feature is also
available with the other configurable parameters.
Output Reset Time Configuration
This allows the Comms Fail Time
to be selected - this is the time for
an output to reset if it has not
received an update or change
message.
Each output on the unit, either
analog or digital, may be configured
to reset (off or 0mA) when no update
transmission has been received for a
certain time. This option can be used
to ensure that communications
failure will not result in loss of
control. For example, outputs connected to pumps should be configured to reset on communications
failure so that the pump will turn off. The default condition is zero (no reset).
If the reset time is less than the update time, then the output will reset when the reset time expires, and