The diagram shows the PLC to VVSX handshake:
dt wait time to ignore material end faults.
Tw Time to write measurement results.
6.8.4 TREAD CENTERING command sequence
The Tread centering consists of two parts:
1. Tread read profile command sequence on page 6
‑
32
(the reading of the position of the entire tread)
2. Tread centering command sequence on page 6
‑
32
(the centering of the tread while it is applied on the B&T drum)
6.8.4.1 Tread read profile command sequence
PLC command VVS status
Read Profile Set(BusyTimer,1000 msec)
Busy
Busy AND Material under sensor
AND Hold
AND Holded
AND NOT Hold
AND NOT Holded
Centering material ready OR NOT Material
under sensor after more than 5 seconds!
Note Centering is ready when:
The scan material ready bit is raised OR the
material under sensor bit falls off because
material is removed manually from under the
camera.
Zero command
Zero status
1
1. ZERO STATUS is the situation where all bits, except the heartbeat bit, are set to zero.
PARAMETERS
Communication scenarios
6
THINKING FORWARD
VMI Vision System VVS (OL82) VVSX 13.0.12.0, VVSU 3.0.6 / 4 / 2016-07-11 / pd#175592
6-31
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