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I/O Bit Description to Welder
I/O Control Bits
Cyclic I/O to Welder Control Bits
Control Bit
#
Mode
Description
1
0
0
0
Job Mode
Uses Job Mode and all parameters from the stored settings.
0 1 Job
Mode
using
I/O Parameter
Inputs
Uses Job Mode, but welding parameters are from the inputs from the Cyclic I/O to
the welder. Note that the Trim might not be relevant for all weld modes.
1
0
N/A
Reserved for future use.
1
1
N/A
Reserved for future use.
Item
Description
Trigger
The trigger is used to enable/disable welding.
Can not trigger on when a cold inching input or when the Touch Sense Input is on. Trigger will only
come On when these inputs are off. If set Trigger to On when one of these are On, then when
these go off, must set Trigger to Off, then set Trigger back On. Before trigger on, make sure a valid
Job No is set.
Gas Purge
Gas can be controlled directly by this bit if a preflow and postflow is desired. But Gas will come on
and go off according to the sequencer’s machine state;
regardless of this bit if the Job is set to use
a Preflow/Postflow if the selected mode requires Gas.
Touch Sense This input will cause the power supply emit only a low current low voltage output used to detect a
short or zero voltage condition indicating that the wire has touched the workpiece. The Touch
Sense output bit is true when touching; false otherwise. This bit should not be set while the Trigger
input is true.
Weld Disable
When bit is true in the idle state, this will prevent any welding. If this is turned on during welding and
“Enable Burnback on a Fault” is true, then weld sequencer will transition to the Burnback state and
then disable the weld controller preventing any welding. If this is turned on during welding and
“Enable Burnback on a Fault” is set to false, then the welding will be stopped immediately and the
weld controller will be disabled preventing any welding.
CI Fwd
CI Rev
Cold Inch Forward or Cold Inch in Reverse.
These inputs will cause the wire to “cold inch”. The direction is determined by the true bit (the
second bit set true is ignored). The wire feed speed is determined by the value of the Cold Inch
Speed on the Wire drive.
Note that these inch command inputs are ignored during welding (Trigger = true).
PM Flt Reset
Production Monitoring Fault Reset. This bit is used when using Production Monitoring, to clear a
production monitoring fault or alarm.
Job Number
This input to the welder is used to select the desired Job Number to weld with. The valid range is
from 1 to 1000. Note that there must be a valid job “programmed” for the inputted job number and
the programmed Job WorkPoint and Trim units must match the present units for these items in
order to weld.
Job Number can be changed many times during the weld. If a job numbers changes during
upsloping, upsloping will stop and the sequencer will go to the weld state. If a Job number changes
during downsloping, downsloping will stop, and the sequener will proceed to the next enabled end
state.
If a Job number is actually updated, any new welding settings will not take effect during the
welding. After the welding is complete, the job parameters will be updated with any new settings.
