Siemens Simatic S7-1500 CPU 1512C-1 PN - Page 182

Parameter data records
B.7 Parameter data records of the high-speed counters
CPU 1512C-1 PN (6ES7512-1CK01-0AB0)
182 Manual, 12/2017, A5E40898741-AA
Table B- 15 Parameter data record 128 - Hardware interrupts
Bit →
7
6
5
4
3
2
1
0
Byte
Hardware interrupts
1)
8
Reserved =
0
1)
Reserved =
0
1)
Reserved =
0
1)
Direction
reversal
Underflow
(low count-
ing limit
violated)
Overflow
(high count-
ing limit
violated)
Gate stop Gate start
9
Synchroni-
zation of the
counter by
an external
signal
New cap-
ture value
available
Reserved =
0
1)
Zero cross-
ing
Reserved =
0
1)
Comparison
event for
DQ1 oc-
curred
Reserved =
0
1)
Comparison
event for
DQ0 oc-
curred
1)
Reserved bits must be set to 0
Table B- 16 Parameter data record 128 - Behavior DQ0/1
Bit →
7
6
5
4
3
2
1
0
Byte
Behavior of DQ0/1
10
Set output (DQ1):
Set output (DQ0):
0000
B
: Use by user program
0000
B
: Use by user program
0001
B
:
Counting: Between comparison value 1 and high limit;
Measuring: Measured value >= Comparison value 1
0001
B
:
Counting: Between comparison value 0 and high limit;
Measuring: Measured value >= Comparison value 0
0010
B
:
Counting: Between comparison value 1 and low limit;
Measuring: Measured value <= Comparison value 1
0010
B
:
Counting: Between comparison value 0 and low limit;
Measuring: Measured value <= Comparison value 0
0011
B
:
Counting: At comparison value 1 for one pulse dura-
tion;
Measuring: Reserved
0011
B
:
Counting: At comparison value 0 for one pulse duration;
Measuring: Reserved
0100
B
: Between comparison value 0 and 1 0100
B
: Reserved
0101
B
:
Counting: After set command from CPU until compari-
son value 1;
Measuring: Reserved
0101
B
:
Counting: After set command from CPU until compari-
son value 0;
Measuring: Reserved
0110
B
:
Counting: Reserved
Measuring: Not between comparison value 0 and 1
0110 to 1111
B
: Reserved
0111 to 1111
B
: Reserved
11
Count direction (DQ1):
Count direction (DQ0):
Reserved = 0
1)
Substitute
value for
DQ1
Substitute
value for
DQ0
00
B
: Reserved
00
B
: Reserved
01
B
: Up
01
B
: Up
10
B
: Down
10
B
: Down
11
B
: In both directions
11
B
: In both directions