Siemens SIMATIC S5-95F Manual page 288

Blocks and Their Functions
Parameter Argument
Block ID: OBC
Default setting
CAP 0 N
CBP 0 N
Permissible changes
CAP s p
CBP s p
CAN s p
CBN s p
CCP s q
CCN s q
Block ID: KT
Default setting
DA 33.X E
DA 34.X E
Permissible changes
DA 33.x p i
DA 34.x p i
9-34
Onboard counter
Counters register pulses with positive edge at the counter
input. Counters are assigned to signal group 0 and not yet
enabled.
Counters are enabled by parameterizing of a signal group and
a comparison value.
Counters register pulses with positive edge.
Counters register pulses with negative edge.
Counters A&B are cascaded. Cascaded counter registers
pulses with positive edge.
Counters A&B are cascaded. Cascaded counter registers
pulses with negative edge.
Permissible range of values
Signal group s:
Comparison value p:
Comparison value q:
* If p or q = 0, the maximum comparison value is loaded
Onboard outputs for short-circuit test
The onboard outputs DQ 33.0 to 33.3 and DQ 34.0 to 34.3 are
not used for short circuit test and can be used as non-failsafe
outputs.
DI bits pi are assigned to short-circuit test DQ 33.x or 34.x
Bit no. of DQ 33/34.x:
x = 0, 1, 2, 3
Addresses of DI:
P =a.b a=0 ... 33
i
b=0 ... 7
Pi = E: End of list
Note:
You must assign DIs endangered by short circuit to different
short-circuit test DQs. A maximim of 8 DIs can be assigned to
one test DQ.
Example:
DQ 34.0 0.4 32.0 33.7 E
Explanation
s= 0, 1, ... , 31
*
p=0 , 1, ... , 65536
*
q=0 , 1, ... , 4294967296
a=59
b=0 ... 3
EWA 4NEB 812 6210-02
S5-95F