Control- / Status Byte 750-404 - WAGO 750-404 Manual

18 • 750-404 [Up/Down Counter /100 kHz]
Process Image

2.1.2.7.1 Control- / Status byte 750-404

The control byte C0 serves for setting and locking the counter and for setting
the outputs. The status byte S0 shows the status of the counter and the inputs
and outputs.
0
X
With the control and status byte the following tasks are possible:
Set Counter:
Put Bit 5 into the control byte. The counter with the 32 bit value is loaded into
output bytes 0-3. As long as the bits are set, the counter can stop and
information is stored. The ensuing data of the counter will be conveyed to the
status byte.
Lock Counter:
Bit 4 is set into the control byte, then the count process is suppressed. Bit 4 in
the status byte communicates the suppression of the counter.
Set/ Reset Outputs:
Bits 2 and 3 set the additional two outputs of the counter module.
B7 B6 B5
0 0 Set
counter
This constant must be set to zero.
B7 B6 B5
X X Counter
is set
This value is not evaluated.
Control byte
B4 B3
Lock Set
counter output output
DO 2
Status byte
B4 B3
Counter actual actual
is signal at signal at
blocked output output
DO 2
B2 B1 B0
Set 0
DO 1
B2 B1 B0
actual actual
signal at signal at
input input
DO 1 U/D CLOCK
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0