Control- / Status Byte 750-404/000-004 - WAGO 750-404 Manual

20 • 750-404 [Up/Down Counter /100 kHz]
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2.1.2.7.3 Control- / Status byte 750-404/000-004

The control byte C0 serves for setting and locking the counter and for setting
the outputs dependent or independently on the counter reading. 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.
Switching the outputs dependent of the counter:
The bits 0 and 1 activate the function: output dependent setting of binary
outputs. If the counter reading 0x80000000 is exceeded, output DO 1 is
activated. For the output DO 2 only the bottom 16 bits of the counter reading
are taken into account, which means that output DO 2 is activated as soon as
the counter reading 0x8000 is exceeded. Having reached 0 again, the outputs
are reset.
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 Output Output
O2 O1
DO 1 activated activated
dependin dependin
g of the g of the
counter counter
value value
B2 B1 B0
actual actual
signal at signal at
input input
DO 1 U/D CLOCK
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