Siemens SIMATIC S5 - Direct Signal Status Display

Test and Service
Direct signal status display
Call function selection menu with
Select PU-function
Nomenclature in menu:
DIR. SIGNATJ
STATUS
Example:
I 1.1
End function
This function
is only possible in operating
mode 21 "PC WITH PC-MEM" (only with
PC
S5-130A/K) or 22 "PC WITH PU-MEM".
In each case the signal status of an
input
(I), an output (Q), a flag (F) ,
a timer (T) or a counter (C) may be
interrogated.
Notes:
If the status display
is to be carried out
in operating mode 21 "PC WITH PC-MEM"
and with the switch on the CPU in the
"CYCLE" position, then the function "Transfer
contents of PC-memory into PU-memory"
(page 35) must be carried out first if the
PU-memory does not contain the same program
as the PC.
In operating mode 21 "PC WITH PC-MEM"
and 22 "PC WITH PU-MEM" and with the
switch on the CPU in "CYCLE" position,
signal status display
is only possible, if
the operand
is contained in the program.
With PC
S5-110A/-010 signal
status displays'
are only possible if the switch on the CPU
is
in the "CYCLE" position.
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