108 • I/O modules
Counter modules 750-404/000-002
Modular I/O System
ETHERNET TCP/IP
4.2.1.1.5
Variation
Peak Time Counter 750-404/000-002
Technical description
The counter module also can be ordered as peak time counter with
750-404/000-002.
This description is only intended for hardware version X X X X 0 0 0 1- - - -.
The serial number can be found on the right side of the module.
The counter begins processing with pulses at the CLOCK input. The changes
from 0 V to 24 V are counted.
The counter counts up if the input U/D is set at 24 V. With an open circuit in-
put or 0 V the counter counts backwards.
The two bottom contacts each include another output. These outputs are acti-
vated through bits in the control byte.
The high states of the input and output channels are each indicated by a LED.
The counter module can operate with all WAGO-I/O-SYSTEM bus-couplers
(except for the economy type).
Organization of the input and output data:
The counter begins processing with pulses at the CLOCK input and counts the
pulses in a special time span. The time span is given as 10 s.
The state of the counter is stored in the process image until the next period.
After the recording the counting starts again at 0.
The activation of the counting and the synchronization with the SPS is made
by a handshake in the control and status byte.
The end of the counting period and thus the new process data is signaled by a
toggle bit in the status byte.
The control byte has the following bits:
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
Start of the
periodic
counting
0
Output
value at
output O2
Output
value at
output O1
0
0
The status byte has the following bits:
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
Couting star-
ted
0
actual
signal at
output O2
Actual
signal at
output O1
actual si-
gnal at input
V/R
Togglebit
for end of
the record
