Siemens CPU 948 User Manual

Parameter
type
Data type Actual operands permitted
Table 2-6 continued:
D
(Cont.)
KF for a fixed point number
-32768 to +32767
KG for a floating point
number
1)
Constants
B Data type designation not possible DB n Data block; the operation
C DB n is executed
FB n Function block (permitted
only without parameters)
called unconditionally (JU . .n)
OB n Organization block called
unconditionally (JU . .n)
PB n Program blocks - called
unconditionally (JU . .n)
SB n Sequence blocks - called
unconditionally (JU . .n)
T Data type designation not possible T 0 to 255 Timer
C Data type designation not possible Z 0 to 255 Counter
1)
±0.1469368 x 10
-38
to ±0.1701412 x 10
39
Note
S flags are not permitted as actual operands for function blocks.
After the jump to a function block, the actual operands from the block
then called are used in the function block program instead of the
formal operands.
This feature of programmable function blocks allow them to be used
for a wide variety of purposes in your user program.
When the program returns from the called function block, the list of
actual operands in the calling block is skipped by a jump operation
activated implicitly by STEP 5 in MC-5 code.
Function Blocks
CPU 948 Programming Guide
2 - 30 C79000-G8576-C848-04

Siemens CPU 948 Specifications

General

Brand	Siemens
Model	CPU 948
Category	Controller
Language	English