Siemens CPU 948 - Page 542

testing 6-57
validity 2-38
data word 1-13, 2-35, 2-39
date 6-38
DBA (data block start address) 9-11
DBL (data block length) 9-13
decimal numbers 2-8
decrementing 3-66
defaults, modifying 1-8
delay interrupts 6-32, 6-35
delayed interrupt 4-29, 4-33 - 4-34, 6-50
digital logic operations 3-50
disable interrupts 6-12, 6-29
dual-port RAM 9-29
E
ERAB
see results codes
error analysis 5-8
error in self-test 5-33
error information 5-5
errors
avoiding 5-4
cause 5-23
handling 5-20
F
F flags 1-12, 10-23
FEDBX (error in G DB/GX DX) 5-32
fixed point numbers 2-9
flags
multiple use 4-46
floating point numbers 2-8
formal operands 2-25, 3-52
function blocks (FB/FX)
general 2-13, 2-23
programming 2-25
standard function blocks 2-23, 2-33
structure 2-24
G
global memory
access 9-25
general 9-4
GRAPH 5 2-5
H
hot restart 4-27
I
I/Os
modules 1-11
O area 1-11
P area 1-11
incrementing 3-66
interface to system program 1-8, 1-10, 2-18
interprocessor communication flags
data exchange via IPCs 10-5
general 3-13, 10-5
jumper settings 10-5
interrupt-driven processing 1-6
interrupt-driven program execution 4-32, 4-41
interrupts
jumper settings 12-4
interrupts
general 4-43
ISTACK 4-5
ISTACK (interrupt stack)
code bits 5-15
contents 5-14
error information 5-5
information in ISTACK 5-15
output 5-6, 5-9
J
jump operations 3-59
L
LAD (ladder diagram) 2-4
LED display 4-12 - 4-13
library number 2-36
load operations 3-21, 3-55
local memory
access 9-24
general 9-4
logic operations 3-50
List of Key Words
CPU 948 Programming Guide
Index - 2 C79000-G8576-C848-04