Siemens SIMATIC S5 User Manual

STEP 5 Operations S5-115F Manual
Loading a count as input, output, flag, or data word
Load statement: LDW 3
The count 410 is stored in data word DW 3 in BCD code.
Bits 12 to 15 are insignificant for the count.
11 015
0 1 0 0 0 0 0 1 0 0 0 0
Bit
Three-digit count
(in BCD code)
DW 3
Scanning the counter
Use Boolean logic operations to scan the counter status (e.g., A Cx). As long as the count is not
zero, the scan result is signal state ”1”.
Outputting the current counter status
You can use a load operation to put the current counter status into ACCUM 1 and process it
further from there. The ”Load in BCD” operation outputs a digital display ( Figure 3-5).
ACCUM 1
Current Counter Status in C2
L Z2 LC Z2
a a a a a a a a a a a a a a
a
a a a a a a a a a a a a
a
a
a a a a a a a a a a a a
a
a
a a a a a a a a a a a a
a
a
a a a a a a a a a a a a
a
a
a a a a a a a a a a a a
a
a a a a a a a a a a a a a a
Binary count Three-digit count in
BCD code
indicates bit positions occupied by ”0”.
a a a a a
a
a a a
a
a
a a a
a
a
a a a
a
a
a a a
a
a a a a a
a a a a a a a a a a a a a a
a
a a a a a a a a a a a a
a
a
a a a a a a a a a a a a
a
a
a a a a a a a a a a a a
a
a
a a a a a a a a a a a a
a
a
a a a a a a a a a a a a
a
a a a a a a a a a a a a a a
a a a a a a a a
a
a a a a a a
a
a
a a a a a a
a
a
a a a a a a
a
a
a a a a a a
a
a
a a a a a a
a
a a a a a a a a
Figure 3-5. Outputting the Current Counter Status
3-26 EWA 4NEB 811 6149-02

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)