Rockwell Automation 45MLA Controller Installation Instructions User Manual
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Note: Once changed, DIP switch settings are only recognized
after a power cycle.
The following table details DIP switch settings for the I/O board.
Please refer to the user manual for further information on the
listed functions.
Analog—DIP Switch Settings
Table 9: Analog Model DIP Switch Settings
It is possible to configure the analog controller to ignore short
beam interruptions, such as those caused by small particles
passing through the detection area. The double scan mode is
enabled by turning DIP switch 4 ON. In this mode every beam is
evaluated twice (instead of once) and only beams that are
interrupted during both evaluations are recognized. This allows
very brief beam interruptions to be ignored. When using double
scan mode the response time is increased.
Teach Instructions
The analog output is automatically scaled to the length of the
connected arrays. If no beams are interrupted, the analog output
is at the minimum (4 mA or 0V); if the top (last) beam is
interrupted (in absolute/position mode) or all the beams are
interrupted (in relative/size mode), the analog output is at the
maximum (20 mA or 10V) with a straight line slope for conditions
in between those states. This means that most applications will
not require teaching the device. For applications that do require
customized scaling of the output use the following teach steps.
Function
DIP Switch S1
(0: OFF, 1: ON, X: not relevant)
8
7
6
5
4
3
2
1
Default setting
0
0
0
0
0
0
0
0
Current output
x
x
x
x
x
x
x
0
Voltage output
x
x
x
x
x
x
x
1
Absolute mode (position)
x
x
x
x
x
x
0
x
Relative mode (size)
x
x
x
x
x
x
1
x
Enable remote teach
0
x
x
x
x
1
x
x
Enable double scan filter
0
x
x
x
1
x
x
x
Output logic
Light Operate = 24V (PNP L.O.)
Dark Operate = 0 V (NPN D.O.)
0
x
x
0
x
x
x
x
Output logic
Light Operate = 0 V (NPN L.O.)
Dark Operate = 24 V (PNP D.O.)
0
x
x
1
x
x
x
x
Standard beam counting direction
0
x
0
x
x
x
x
x
Reverse beam counting direction
0
x
1
x
x
x
x
x
Normal operation
0
x
x
x
x
x
x
x
Set default
1
x
x
x
x
x
x
x
The teach button on the extension PCB and the remote teach
input (Input 1) both utilize the same teach procedure. Set DIP
switch S1:3 to ON (and cycling power) to enable the remote teach
input. When using the remote teach, if the instructions indicate
“Press and hold teach button for five seconds” the input should be
turned ON for at least five seconds.
1. Start teach: Press and hold the teach button for approximately
five seconds until LED D15 begins flashing once every three
seconds, indicating that the unit is in teach mode.
2. Teach minimum analog output (4 mA or 0V): Place the
object that is to be represented by the minimum analog
output within the arrays. Press and release the teach button.
LED D15 now flashes twice every three seconds, indicating that
any interrupted beams have been recognized. If no beams are
interrupted, the minimum analog output value (4 mA or 0V) in
run mode will indicate that no beams are interrupted.
3. Teach maximum analog output (20 mA or 10V): Place the
object that is to be represented by the maximum analog
output within the arrays. Press and release the teach button.
LED D15 now flashes three times every three seconds,
indicating that any interrupted beams have been recognized. If
no beams are interrupted, the maximum analog output value
(20 mA or 10V) in run mode will indicate that no beams are
interrupted.
4. Complete teach: To complete the teach process, press and
hold the teach button until the LED D15 turns off
(approximately five seconds), signaling the end of the teach
process. The taught values are saved to non-volatile (flash)
memory. Alternatively, the newly taught values can be
discarded by briefly pressing the teach button. LED D15 turns
off (indicating the end of the teach process) and the previous
values are restored.
Notes on the teach process:
• If the controller is set in absolute/position mode (DIP switch
S1:2 = OFF), the discrete output (Out 1) will change state only
when a beam within the taught area is interrupted. For
example, if the minimum analog output is set for beam 10 and
the maximum analog output is set for beam 30, blocking only
beam 5 or beam 40 will not change the state of the discrete
output, while interrupting beam 20 would change the state of
the discrete output. The discrete output WILL change state if
both beam 40 AND beam 20 are blocked. If the controller is set
in relative/size mode (DIP switch S1:2 = ON), the discrete
output (Out 1) will change state if any beam is interrupted.
• Instead of using the actual object to be detected for the teach
process, the appropriate beams may be interrupted by other
means during the teach process, such as a metal flag.
ATTENTION
Protect the controller from ESD with proper
grounding or shunting and the use of static
control packaging and materials handling
products. Dissipate and neutralize by
grounding, ionization, and the use of
conductive and dissipative static control
materials.