Siemens 353 User Manual page 57

UM353-1B
output requirement is less than the maximum pulse rate of 5/sec available with a 0.1 sec cycle time. The
requirement would also be satisfied if a PUL SCAL of 1 was selected which would have required a maximum pulse
rate of 1/sec.
POWER UP - During a warm start, if the configuration parameter PU LAST was set to YES, the integrator function
will initialize with the last value prior to power down and all outputs will be initialized to the last value prior to
power down. If set to NO, or during a cold start, the integrator and all outputs will initialize to 0.
Input EC allows the batch totalizer block to be used with another function block, such as the DINU that provides a
count signal. When input A is not configured it will be set to (0.0). The EC input is summed with the initial value
for use as the total. This value will now be displayed as the total on the operator faceplate and the presets will act
on this value to provide outputs A1 and A2.
External Count Input
EC
Zero Drop Out
.
A
ZDO
Analog Input
Stop
S
Reset
R
T1
T2
Required:
Max. Pulse Rate =
April 2012
BATCH TOTALIZER
Integrator
dt
A(t)
-
+/ 1
DIRect ACTing ?
INITital VALue
Trip 1 - External Setting
Trip 2 - External Setting
A (maximum)
[Time Base (sec) ][PUL SCAL]
BLOCK DIAGRAM
+
+
+
Display (.T)
3
2 1
..
PRESET 1
0 0
7
..
PRESET 2
8 0 0
..
PULse SCALing
.00001 - 99999
Available:
Max. Pulse Rate =
Function Blocks
TotaL
TL
TOTalizer_UNITs
Trip 1
T1
Alarm 1
A1
Trip 2
T2
Alarm 2
A2
PuLse
PL
0.5
Cycle Time
Rev 2
3-27
.