Siemens SIMATIC S7-1200

Technology instructions
10.1 Counting (High-speed counters)
S7-1200 Programmable controller
556 System Manual, V4.2, 09/2016, A5E02486680-AK
10.1.1
CTRL_HSC_EXT (Control high-speed counter) instruction
10.1.1.1
Instruction overview
Table 10- 1 CTRL_HSC_EXT instruction
LAD / FBD
SCL
Description
"CTRL_HSC_1_DB" (
hsc:=_hw_hsc_in_,
done:=_done_out_,
busy:=_busy_ out_,
error:=_error_out_,
status:=_status_out_,
ctrl:=_variant_in_);
Each CTRL_HSC_EXT (Control high-
speed counter (extended)) instruction
uses a system-defined data structure
stored in a user-defined Global DB to
store counter data. You assign the
HSC_Count, HSC_Period, or
HSC_Frequency data types as an input
parameter to the CTRL_HSC_EXT in-
struction.
1
STEP 7 automatically creates the DB when you insert the instruction.
2
In the SCL example, "CTRL_HSC_1_DB" is the name of the instance DB.
Table 10- 2 Data types for the parameters
Parameter
Declaration
Data type
Description
HSC
IN
HW_HSC
HSC identifier
CTRL IN_OUT Variant SFB input and return data.
Note: Refer to "CTRL_HSC_EXT instruction System Data
Types (SDT) (Page 561)" for further information.
DONE OUT Bool 1= Indicates SFB is finished. Always 1 because SFB is syn-
chronous
BUSY
OUT
Bool
Always 0, function is never busy
ERROR
OUT
Bool
1 = Indicates an error
STATUS OUT Word Execution condition code
Note: Refer to the "Execution condition codes" table below for
further information.
Table 10- 3 Execution condition codes
STATUS (W#16#)
Description
0
No error
80A1
HSC identifier does not address an HSC
80B1
Illegal value in NewDirection
80B4
Illegal value in NewPeriod
80B5 Illegal value in NewOpModeBehavior
80B6
Illegal value in NewLimitBehavior
80D0
SFB 124 not available