Overview Of The Count Modes - Siemens ERTEC 200P-2 Manual

Enhanced real-time ethernet controller
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2.3.10.3.4

Overview of the count modes

Gate_
Ext_
Gate_
polarity
gate_
effect
trig_
enable
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
0
Copyright © Siemens AG 2016. All rights reserved
Technical data subject to change
Clk_
Function
input_
select
0
Gate mode:
Counter counts/loads with internal clock CLK_TIMT dependent on the preselec-
tor value as long as INT_GATE_TRIG=1.
1
Count mode:
Counter counts/loads with each rising edge of INT_GATE_TRIG, independently
of the preselector value.
0
Trigger mode:
Counter counts/loads with internal clock dependent on the preselector value and
each rising edge of INT_GATE_TRIG triggers the counter (sets the counter to the
load/reload value if the current counter value is unequal to the load/reload value
or has no effect if the current counter value is equal to the reload value).
1
Toggle mode:
Counter changes with each rising edge of INT_GATE_TRIG independently of the
preselector value between
loading with load/reload value (if the current counter value is unequal to the
load/reload value)
and
down-counting (if the current counter value is equal to the load/reload value)
0
Gate mode:
Counter counts/loads with internal clock CLK_TIMT dependent on the preselector
value as long as EXT_GATE_TRIG=1.
1
Count mode:
Counter counts/loads with each rising edge of EXT_GATE_TRIG, independently
of the preselector value.
0
Trigger mode:
Counter counts/loads with internal clock dependent on the preselector value and
each rising edge of EXT_GATE_TRIG triggers the counter (sets the counter to
the load/reload value if the current counter value is unequal to the load/reload
value or has no effect if the current counter value is equal to the reload value).
1
Toggle mode:
Counter changes with each rising edge of EXT_GATE_TRIG independently of the
preselector value between
loading with load/reload value (if the current counter value is unequal to the
load/reload value)
and
down-counting (if the current counter value is equal to the load/reload value)
0
Gate mode:
Counter counts/loads with internal clock CLK_TIMT dependent on the preselector
value as long as INT_GATE_TRIG=0.
1
Count mode:
Counter counts/loads with each falling edge of INT_GATE_TRIG, independently
of the preselector value.
0
Trigger mode:
Counter counts/loads with internal clock dependent on the preselector value and
each falling edge of INT_GATE_TRIG triggers the counter (sets the counter to the
load/reload value if the current counter value is unequal to the load/reload value
or has no effect if the current counter value is equal to the reload value).
1
Toggle mode:
Counter changes with each falling edge of INT_GATE_TRIG independently of the
preselector value between
loading with load/reload value (if the current counter value is unequal to the
load/reload value)
and
down-counting (if the current counter value is equal to the load/reload value)
0
Gate mode:
Counter counts/loads with internal clock CLK_TIMT dependent on the preselector
280
ERTEC 200P-2 Manual
Version 1.0

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