R55F Series Fiber-Optic Color Mark Sensors
Remote Programming
The gray wire of the R55F may be connected to a remote switch or to a process
controller to:
- Set sensitivity via either Static or Dynamic TEACH mode
- Set output response via SETUP mode
- Disable the push button functions
A remote programming switch is connected between the gray wire and dc common (see
Hookup diagrams on page 11). The switch may be either a normally-open contact, or an
open-collector NPN transistor with its emitter connected to dc common.
Remote programming is accomplished using a specified sequence of input pulses.
The duration of each pulse is defined as:
0.04 seconds < T < 0.8 seconds (40 ms < T< 800 ms)
Remote Static TEACH Mode
1) Present the Output ON condition to the fiber sensing end and pulse the Remote
TEACH input once.
2) Wait at least 0.8 seconds, present the Output OFF condition, and pulse the Remote
TEACH input once.
If sensing contrast is adequate, the sensor flashes one segment of the signal strength
light bar for 3 seconds to indicate relative contrast, and then enters RUN mode.
If contrast is too low, the sensor flashes five segments of the signal strength light bar
in unison to warn of unacceptably low contrast, and returns to re-teach the Output ON
condition (Step 1).
Remote Static Single-Point TEACH
The single-point TEACH may also be performed using the remote wire. Present the
target and single-click the remote wire. Wait for at least 0.8 second, then double-click
the remote wire. If the TEACH is successful, the sensor will flash the middle two LEDs
of the bar graph, and return to RUN mode.
Remote Dynamic TEACH Mode
1) Hold the TEACH input low for > 2 seconds
2) Continue holding the TEACH input low while presenting light and dark sensing
conditions. Open switch when finished teaching.
If sensing contrast is adequate, the sensor flashes one segment of the signal strength
light bar for 3 seconds to indicate relative contrast, and then enters RUN mode.
If contrast is too low, the sensor flashes five segments of the signal strength light bar
in unison to warn of unacceptably low contrast, and returns to RUN mode with its
previously taught conditions.
Switch Open
Switch Closed
to dc common
0.04 < T < 0.8 sec
Figure 4. Input pulse timing
Present
Output ON
Condition
Present
Output OFF
Condition
> 0.8 sec
T
T
Figure 5. Static TEACH mode
Present
Output ON
Condition
Double-Click
> 0.8 sec
T
T
T
T
Figure 6. Static Single-Point TEACH mode
> 2 sec
TEACH Light
and Dark
Conditions
Figure 7. Dynamic TEACH mode
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