WAGO 750-404 Manual page 24

24 • 750-404 [Up/Down Counter /100 kHz]
Examples
6. The cyclic period measurement is running. Stopping the cyclic recording
Input bit
Value
Output bit
Value
7. The cyclic period measurement is stopped. The counter reading is reset.
Input bit
Value
Output bit
Value
2.1.2.8.3 750-404/000-004
Set the digital output DO 1 after 4.000 pulses have been counted. There are
several possibilities to set an output.
If DO 1 is used as an automatic switching output and if the counter is to count
up, set the counter to
0x80000000 - 4000 = 0x7FFFF060
and apply + 24V to the U/D input. Furthermore, activate bit 0 in the control
byte. After 4000 pulses, the counter reading of 0x80000000 is reached and
output DO 1 activated.
If you wish the counter to count down, pre-set
0x80000000 + 4000 = 0x80000FA0
and apply 0V to U/D. After 4000 pulses the counter reading 0x80000000 is
reached and output DO 1 deactivated.
If DO 2 is to be used as a switching output, load the counter with
respectively, because only the bottom 16 bits of the counter are used for
switching output DO 2. Instead of bit 0 now activate bit 1 in the control byte.
The binary output not involved each time can be directly addressed by the
controls via bit 2 and 3.
was requested. The process data supply the counter reading, which was
registered in the previous cycle.
B7
0
B7
0
The process data supply the value 0.
B7
0
B7
0
0x8000 - 4000 = 0x7060 or
0x8000 + 4000 = 0x8FA0
Control byte
B6 B5 B4
0 0 0
Status byte
B6 B5 B4
0 1 0
Control byte
B6 B5 B4
0 0 0
Status byte
B6 B5 B4
0 0 0
B3 B2 B1
X X 0
B3 B2 B1
X X 1
B3 B2 B1
X X 0
B3 B2 B1
X X 1
WAGO-I/O-SYSTEM 750
I/O Modules
B0
0
B0
X
B0
0
B0
0