(b) Programming by the STL
S10
S0 X0
SET S0
M9002
SET S10
T0
SET
Y0
SET
Y3
T0
K20
SET S30
T0
SET
S20
M0
M0
S20
RST
Y3
T1
SET S21
Y5
T1
K80
S21
T2
T2
T2
T3
K50
K5
M9000
T3
SET S22
S22
T4
SET
S10
Y4
T4
K50
S30
RST
Y0
T1
SET
S31
Y2
T1
K100
S31
T2
T2
T2
T3
K50
K5
M9000
T3
SET S32
S32
T4
SET S10
Y1
T4
K50
RET
ALT M0
ALT Y5
ALT Y2
118
Activate the step S0.
When X0=ON, the active step transfers to S10.
Set A red light ON.
Set B red light ON.
Activate the coil of 2 Sec. timer.
When the contact T0=ON, alters the ON/OFF status of M0.
This M0 is about to select either B group go (M0=ON) or A group go (M0=OFF).
When the contact T0=ON & M0=ON, the active step transfers to S20.
When the contact T0=ON & M0=OFF, the active step transfers to S30.
Reset B red light to OFF.
Activate the coil of 8 Sec. timer.
B green light is lit.
B green light is lit for 8 Sec.
When the contact T1=ON, the active step transfers to S21.
The B green light ash for 5 times,
by 1 Sec. cycle.
Activate the coil of 0.5 second timer.
When the contact T2=ON, alters
the status of B green light.
When the contact T3=ON, the active step transfers to S22.
When the contact T4=ON, the active step transfers to S10.
A yellow light is lit.
B yellow light is lit for 5 Sec.
Activate the coil of 5 Sec. timer.
Activate the coil of 5 Sec. timer.
Activate the coil of 5 Sec. timer.
Returning to standard ladder, step ladder ends.
B yellow light is lit.
A yellow light is lit for 5 Sec.
When the contact T4=ON, the active step transfers to S10.
Activate the coil of 5 Sec. timer.
When the contact T3=ON, the active step transfers to S32.
The A green light ash for 5 times,
by 1 Sec. cycle.
A green light is lit for 10 Sec.
A green light is lit.
Activate the coil of 10 Sec. timer.
When the contact T1=ON, the active step transfers to S31.
Activate the coil of 0.5 Sec. timer.
When the contact T2=ON, alters
the status of A green light.
Reset A red light to OFF.
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