2.5.4 SR System relay
■
How system relay (SR) works
● A system relay turns ON or OFF under specific conditions.
● Its ON or OFF state is not externally output. It only operates within a program.
■
Types of system relays (SR)
Classification
Function
Example
Operation status
flag
Operation status is indicated by
ON or OFF.
Under operation (RUN) (SR20), under forced input/output
(SR29), results of comparison instruction (SRA to SRC)
Error flag
Turns ON when an error occurs
and indicates abnormalities.
Operation error (SR7, SR8)
Relay that turns
ON or OFF under
specific
conditions
Can be used with the desired
conditions in the program.
Normally ON relay (SR10), ON/OFF for each scan (SR12)
Initial pulse relay (SR13 to SR14), clock pulse (SR18 to
SR1E)
2.5.5 T Timer
■
How timer (T) works
● When a timer is activated and the set time elapses, the timer contact with the same number
as the timer turns ON.
● When the timer is in the time-up state and the timer execution condition turns OFF, the timer
contact turns OFF. All timers are non-hold type.
Time up
TMX n
U0
Tn
:
ON
Timer contact: ON
Timer no.
n: Timer no.
Tn
■
Usage restrictions
● When used as contacts, there are no restrictions on the number of times that can be used.
2.5 Explanations about Relays
WUME-FP7CPUPGR-12
2-19
Summary of Contents for FP7 Series
Page 2: ... MEMO 2 WUME FP7CPUPGR 12 ...
Page 18: ... MEMO xviii WUME FP7CPUPGR 12 ...
Page 52: ... MEMO 1 34 WUME FP7CPUPGR 12 ...
Page 104: ... MEMO 2 52 WUME FP7CPUPGR 12 ...
Page 123: ...3 9 ANS AND stack WUME FP7CPUPGR 12 3 19 ...
Page 125: ...3 10 ORS OR Stack WUME FP7CPUPGR 12 3 21 ...
Page 129: ...3 11 PSHS Push stack RDS Read stack POPS Pop stack WUME FP7CPUPGR 12 3 25 ...
Page 190: ...3 26 JP LBL Jump Label 3 86 WUME FP7CPUPGR 12 ...
Page 239: ...Name Description SR8 ER 3 46 ST ST ST ST ST ST Data Comparison Start WUME FP7CPUPGR 12 3 135 ...
Page 246: ... MEMO 3 142 WUME FP7CPUPGR 12 ...
Page 258: ... MEMO 4 12 WUME FP7CPUPGR 12 ...
Page 304: ... MEMO 5 46 WUME FP7CPUPGR 12 ...
Page 321: ...Name Description ER 6 7 DIVFP2 Division FP2 Compatible WUME FP7CPUPGR 12 6 17 ...
Page 348: ... MEMO 6 44 WUME FP7CPUPGR 12 ...
Page 388: ... MEMO 7 40 WUME FP7CPUPGR 12 ...
Page 438: ... MEMO 8 50 WUME FP7CPUPGR 12 ...
Page 450: ... MEMO 9 12 WUME FP7CPUPGR 12 ...
Page 520: ... MEMO 10 70 WUME FP7CPUPGR 12 ...
Page 602: ... MEMO 11 82 WUME FP7CPUPGR 12 ...
Page 622: ... MEMO 12 20 WUME FP7CPUPGR 12 ...
Page 650: ... MEMO 13 28 WUME FP7CPUPGR 12 ...
Page 1160: ... MEMO 18 66 WUME FP7CPUPGR 12 ...
Page 1188: ... MEMO 19 28 WUME FP7CPUPGR 12 ...
Page 1220: ... MEMO WUME FP7CPUPGR 12 ...
Page 1221: ... MEMO WUME FP7CPUPGR 12 ...