Siemens SIMATIC S5 Operating Instructions

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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Siemens SIMATIC S5 Specifications

General

Product type designation	SIMATIC S5
Programming language	STEP 5
Digital inputs	Varies by model
Digital outputs	Varies by model
Analog inputs	Varies by model
Analog outputs	Varies by model
Supply voltage	24V DC
CPU Type	Varies by model
Memory	Varies by model
Digital I/O	Varies by model
Analog I/O	Varies by model
Communication	PROFIBUS
Operating Temperature	0°C to 60°C
Relative Humidity	5% to 95% (non-condensing)