Siemens SINUMERIK 802C - Page 64

Start-Up
4.3 Starting up the PLC
4-64
SINUMERIK 802C
6FC5 597–3AA20–0BP2 (01.02)
TIMER
Instruction Ladder Symbol Valid Operands
Timer Retentive
On Delay
EN=1, Start
EN=0, Stop
If T
Value
≥ PT,
T
bit
=1
TONR
Txxx
PT
IN
Enable: (IN)
S0
Txxx: T0 – T15
Preset: (PT)
VW, T, C, IW, QW, MW, AC,
Constant
100 ms T0 – T15
Timer On Delay EN=1, Start
EN=0, Stop
If T
Value
≥ PT,
T
bit
=1
TON
Txxx
PT
IN
Enable: (IN)
S0
Txxx: T0 – T15
Preset: (PT)
VW, T, C, IW, QW, MW, AC,
Constant
100 ms T0 – T15
Timer Of Delay If T
Value
< PT,
T
bit
=1
TOF
Txxx
PT
IN
Enable: (IN)
S0
Txxx: T0 – T15
Preset: (PT)
VW, T, C, IW, QW, MW, AC,
Constant
100 ms T0 – T15
COUNTER
Instruction Ladder Symbol Valid Operands
Count Up CU ½, Value+1
R=1, Reset
If C
Value
≥ PV,
C
bit
=1
CTU
Cxxx
CU
R
PV
Cnt Up: (CU)
S1
Reset: (R)
S0
Cxxx: C0 – 31
Preset: (PV)
VW, T, C, IW, QW, MW, AC, Constant, LW
Count Up/Down CU ½, Value+1
CD ½, Value–1
R=1, Reset
If C
Value
≥ PV,
C
bit
=1
CTUD
CD
Cxxx
CU
R
PV
Cnt Up: (CU)
S2
Cnt Dn: (CD)
S1
Reset: (R)
S0
Cxxx: C0 – 31
Preset: (PV)
VW, T, C, IW, QW, MW, AC,Constant, LW
Count Down If C
Value
= 0,
C
bit
=1
CTD
LD
Cxxx
CD
PV
Cnt Down: (CD)
S2
Reset: (R)
S0
Cxxx: C0 – 31
Preset: (PV)
VW, T, C, IW, QW, MW, AC, Constant, LW