Siemens Simatic S7-1500 CPU 1512C-1 PN User Manual page 48

Technology functions
3.1 High-speed counters
Control interface per channel
The following table shows the control interface assignment:
Table 3- 3 Assignment of the control interface
Offset from start Parameter
address
Bytes 0 to 3 Slot 0
Bytes 4 to 7 Slot 1
Byte 8 LD_SLOT_0*
LD_SLOT_1*
Byte 9 EN_CAPTURE
EN_SYNC_DN
EN_SYNC_UP
SET_DQ1
SET_DQ0
TM_CTRL_DQ1
TM_CTRL_DQ0
SW_GATE
48
Meaning
Load value (meaning of the value is specified in LD_SLOT_0)
Load value (meaning of the value is specified in LD_SLOT_1)
Specifies the meaning of the value in Slot 0
Bit 3 Bit 2 Bit 1 Bit 0
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
to
1 1 1 1
Specifies the meaning of the value in Slot 1
Bit 7 Bit 6 Bit 5 Bit 4
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
to
1 1 1 1
Bit 7: Enable capture function
Bit 6: Enable downward synchronization
Bit 5: Enable upward synchronization
Bit 4: Set DQ1
Bit 3: Set DQ0
Bit 2: Enable technological function DQ1
Bit 1: Enable technological function DQ0
Bit 0: Software gate
No action, idle state
Load counter
Reserve
Load start value
Load comparison value 0
Load comparison value 1
Load low counting limit
Load high counting limit
Reserve
No action, idle state
Load counter
Reserve
Load start value
Load comparison value 0
Load comparison value 1
Load low counting limit
Load high counting limit
Reserve
CPU 1512C-1 PN (6ES7512-1CK01-0AB0)
Manual, 12/2017, A5E40898741-AA