Siemens CPU 948 User Manual

Timer and counter
operations
Operation Operand Function
SP =
SD =
SEC =
SSU =
SFD =
FR =
Start timer specified by the formal operand as a pulse with the
value stored in ACCU-1-L (parameter type T).
Start timer specified by the formal operand as ON delay with the
value stored in ACCU-1-L (parameter type T).
Start timer specified by the formal operand as extended pulse
with the value stored in ACCU-1-L or set counter specified
as formal operand with the counter value stored in ACCU-1-L
(parameter type: T, C).
Start timer specified by the formal operand as stored
ON delay with the value stored in ACCU-1-L or
increment a counter specified as formal operand
(parameter type: T, C).
Start timer specified by the formal operand as stored
OFF delay with the value stored in ACCU-1-L or
decrement a counter specified as formal operand
(parameter type: D, C).
Enable formal operand (timer/counter) for cold
restart (see FR T or FR R); (parameter type: T, C).
Insert formal operand
FR T 0 to 255
C 0 to 255
Enable timer for cold restart:
The operation is only executed on the leading edge
of the RLO (change from 0 to 1). The timer is
restarted if the RLO is 1 at the time of the start
operation. (See timing diagram below the table).
Enable a counter for setting or resetting:
The operation is executed only on the leading edge
of the RLO (change from 0 to 1). The counter is only
started if the RLO = 1 at the time of the start operation.
tt
RLO
for SP T
RLO
for FR T
Scan
with A T
Table 3-16 Timer and counter operations with formal operands
Supplementary Operations
CPU 948 Programming Guide
C79000-G8576-C848-04
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Siemens CPU 948 Specifications

General

Brand	Siemens
Model	CPU 948
Category	Controller
Language	English