Rockwell Automation 1746-NT4 Series B,D17466.6.1 SLC 500 4-Channel Thermocouple/mV Input Module User Manual - Manual (Page 51)

Publication 1746-UM007C-EN-P - July 2004
Preliminary Operating Considerations 4-9
Channel Turn-On, Turn-Off,
and Reconfiguration Times The table below gives you the turn-on, turn-off, and reconfiguration
times for enabling or disabling a channel.
Description Duration
Turn-On Time The time it takes to set the
status bit (transition from 0 to
1) in the status word, after
setting the enable bit in the
configuration word. Requires up to one module
update time plus one of the
following:
•
250 Hz Filter = 82 ms
•
60 Hz Filter = 196 ms
•
50 Hz Filter = 226 ms
•
10 Hz Filter = 946 ms
Turn-Off Time The time it takes to reset the
status bit (transition from 1 to
0) in the status word, after
resetting the enable bit in the
configuration word. Requires up to one module
update time.
Reconfiguration
Time The time it takes to change a
channel configuration if the
device type, filter frequency,
or configuration error bits are
different from the current
setting. The enable bit
remains in a steady state of 1.
(Changing temperature/mV
units or data format does not
require reconfiguration time.) Requires up to one module
update time plus one of the
following:
•
250 Hz Filter = 82 ms
•
60 Hz Filter = 196 ms
•
50 Hz Filter = 226 ms
•
10 Hz Filter = 946 ms