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Electrical connection
Spot selection
+
Start
=
Program schedule
Figure 11: Spot selection and counters
7-14
Finally, the spot table must be transmitted to the WT via Services - Spot Table -> WT.
To select a weld spot from the robotic control, you must use its respective spot number
assigned to it in this table.
NOTE
If you set the ident code to 0 and a spot number smaller than 256 on the I/Os, the respec-
tive program from 0 through 255 will be selected directly. This way you can work with the
timer without having to roll in a spot table first.
Now as before, the BOS function Start Simulation requires the selection of program num-
bers!
<Spot selection> will activate the proportional control valve at its programmed pressure
value.
If <Spot selection> cannot find a spot because it is not listed in the spot table, the pres-
sure value assigned to the spot that was active last will be read out. This is to avoid high
pressure fluctuations between welding events if selection = 0 which would tend to reduce
the life of pressure valves considerably.
Logs are recorded and error messages are displayed under the respective <Spot selec-
tion> number.
Influencing the counters via the input signals:
- wear counter
- tip dress counter
PSI 6XXX.350 L1
Spot selection/(electrode no.), 5 least significant bits
+
Tip Dressed
=
Õ reset
+1
Õ
+
Acknowledge Tip change
=
- wear counter
Õ 0
- tip dress counter
Õ 0
1070 080 067-101 (2001.03) GB
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