Toshiba T2N - Manual (Page 261)

5. Programming Language
248
PROSEC T2N
ssss
ssss
Nxx
A
nnnn
ssss
ssss
mmm
M
ssss
T
xxxx
W
ssss
T
xxxx
A
A
SFC Instructions
(A)
(T)
(T)
(A)
Group
FUN
No.
Name Representation Summary
Number of
steps
required
Execution time required
( µ s)
Inactive Active
SFC
initialize
SFC initialize
When the device (A) has changed from OFF to ON,
the instruction inactivates the nnnn steps of the
succeeding SFC program, and activates the initial
step (SFC activation).
4 81
212+10.6
× INT
(hn/16–1)
SFC
step
Initial step
Indicates the start of the SFC program and contains
action program which correspond on a one-to-one
basis. ssss is the step address. 2
(excluding
action)
98 127
Step
This is the single unit of control. It contains action
program which correspond on a one-to-one basis.
ssss is the step address. 1
(excluding
action)
0.44 84
End step
Indicates the end of the SFC program. Returns
processing to the corresponding initial step when the
immediately preceding transition condition holds true.
ssss is the initial step address.
2 0.54 78
Macro step
Corresponds on a one-to-one basis to the macro
program indicated by mmm. ssss is the step
address, and mmm is the macro address.
3 63 110
Wait step
Even if the immediately preceding transition condition
holds true, this instruction does not carry out the
transition until the set period has elapsed. It has
action program which correspond on a one-to-one
basis. ssss is the step address, {T} is the timer
register, and xxxx is the set period.
4
(excluding
action
88 95
Alarm step
Monitors the active period, and if the transition has
not been made within the set period, sets the alarm
device (A) to ON. Contains execution action program
which correspond on a one-to-one basis. ssss is the
step address, {T} is the timer register, and xxxx is the
set period.
4
(excluding
action)
105 115