LINK Systems System 2500 PLS - Manual (Page 14)

System 2500 Operating & Installation Manual - Revision 07 2-6
Setpoints can only be added when the mode keyswitch is in the PROG (Program) position. The
on and off points must then be entered as instructed. If incorrect data is keyed in, the CLEAR
key will remove the entire line and the correct data can then be entered. The CLEAR key cannot
be used once the ENTER key has been pressed to store the data. Once this has been done the
setpoints must be erased or edited.
If a channel is restricted no setpoints can be added. An 'R' will appear in the display beside the
channel number when this is the case. See Section 2.5.5 for more information on restricting
channels.
If necessary, more than one setpoint pair can be added on any channel to turn the output on and
off more than once in a machine stroke. When doing so, the setpoint pairs must be programmed
so that they switch on and off in alternating sequence; that is, the angles entered cannot be in
such an order so that two on points occur in succession followed by two off points. A warning
message will occur if programming is attempted in this way.
Additionally, certain situations prevent the operator from programming more than one on/off pair
on a channel. Only one setpoint pair is allowed on an output which is to be speed advanced (see
Section 2.4.1.5). Attempting to add a second setpoint pair to a channel having advanced
setpoints will produce an error message. Also, if an output channel is being used as the special
assigned stop output for a Cyclic Die-Protection fault (see Section 2.9.2), or if the channel is tied
to the counter (Section 2.4.3), then only one setpoint pair can be programmed. A message will
be displayed signifying either of these last two conditions.
If the unit is programmed for Automatic Single Stroke operation, on/off setpoints cannot be
programmed on channels 7 or 8. During Auto Single Stroke the unit takes control of these
outputs and turns them on and off as required for proper operation (see Section 2.8.4).
WARNING: PLS OUTPUTS OF THE SYSTEM 2500 ARE NOT TO BE USED AS THE
PRIMARY INPUTS TO A PRESS CONTROL.
2.4.1.2 Erasing Setpoints
With the keyswitch in the PROG mode, setpoint pairs can be erased with the ERASE key. The
operator must select either the on or off setpoint of the pair to be erased. To select the setpoint
the operator must use the right or left arrow keys. When either the on or off setpoint of the pair
to be removed is blinking, the ERASE key must be pressed. A message will be displayed asking
the operator to confirm the pair to be erased. If the correct pair has been selected the operator
must again press the ERASE key. If the incorrect pair has been selected, the operator may press
any key other than the ERASE key to abort the erase operation.
If a channel is restricted no setpoints can be erased. An 'R' will appear in the display beside the
channel number when this is the case. See Section 2.5.5 for more information on restricting