P643 External Contact Closure; P647 Totalizer Display; P648 Totalizer Reset, Internal - Siemens Milltronics BW500 Operating Instructions Manual

Parameters
12.9 Totalization (P619 - P648)
12.9.8

P643 External Contact Closure

Sets the duration of the contact closure, in ms, for the external totalizer selected, totalizers 1 and
2 (P643-01 or -02) (
Permissible values are in 10 ms increments from 0. The value is automatically calculated upon
entry of P011 (design rate) and P638 (totalizer 1 resolution, external) so that the duration of
contact closure allows the transistor switch response to track the total, up to 150% of the design
rate. The value can be changed to suit specific contact closure requirements, such as in the
case of programmable logic controllers.
Note
• If the duration selected causes the totalizer to lag behind the count rate, the next possible
duration is automatically entered.
• External Totalizer output frequency must not exceed 13.33 Hz at 150% of design rate.
12.9.9

P647 Totalizer Display

Selects the totalizer combination to be displayed, either manually through the scroll display key
or automatically by control of the display mode (P081).
Entry:
1 = totalizer 1
2 = totalizer 2
3 = totalizer 1 and 2
12.9.10

P648 Totalizer Reset, Internal

Manual reset of the selected internal totalizer when the entry is made (
Entry:
0 = no reset
1 = reset totalizer 2
2 = reset totalizers 1 and 2
Resetting the internal totalizers 1 and 2 resets the internal registers for external totalizers 1 and
2.
182
f
= 30)
f
f
= 0).
BW500 and BW500/L
Operating Instructions, 12/2016, A5E33482052-AD