User manual
3
CONNECTION OF SENSORS
A “sensor” can be a 3-wire proximity switch, 3-wire
photocell or incremental shaft encoder etc.
3-wire devices should use input A as the single input for
unidirectional counting.
For bi-directional (quadrature) counting, input A and input B
must be 90° out of phase, lag or lead.
Two 3-wire devices connected to inputs A and B
respectively can provide signals for bi-directional counting
(either for quadrature or A-B modes).
When signal is generated by contact closure devices,
choose “contact cls” in programming. This ensures
adequate de-bouncing but limits the count rate to 30 counts
per second.
The external control inputs are permanently set in de-
bounce mode but may also be driven by electronic devices,
subject to the 30 count per second limitation.
TIMING DIAGRAM
The timing diagram below illustrates how the direction of
count is controlled in quadrature mode by the lead or lag of
the pulses on Input A with respect to Input B.
Sink Mode
Source Mode
1
2
3
4
5
6
7
8
9
Sensor 1
Sensor 2
+12v
0v
Signal (A)
(Signal B)
External Reset
Keyboard Disable
Count Inhibit
External Print
Illustrating use of two sensors to provide
A and B signals (sink mode depicted).
1
3
4
5
6
7
8
9
Sensor
Signal (A)
(Signal B)
+
v0v
External Reset
Keyboard Disable
Count Inhibit
External Print
External Supply
10 to 30v dc
2
Illustrating use of external power supply
(source mode depicted).
+
1
2
3
4
5
6
7
8
9
Sensor
+12v
0v
Signal (A)
(Signal B)
+
External Reset
Keyboard Disable
Count Inhibit
External Print
(NPN output devices)
1
2
3
4
5
6
7
8
9
+12v
0v
Signal (A)
(Signal B)
External Reset
Keyboard Disable
Count Inhibit
External Print
Contact closure
device(s)
(Contact closure devices)
1
2
3
4
5
6
7
8
9
Sensor
+12v
0v
Signal (A)
(Signal B)
External Reset
Keyboard Disable
Count Inhibit
External Print
(PNP output devices)
1
2
3
4
5
6
7
8
9
+12v
0v
Signal (A)
(Signal B)
External Reset
Keyboard Disable
Count Inhibit
External Print
Contact closure
device(s)
(Contact closure devices)
A
B
Count up Count down
90 Lead
90 Lag
COMMUNICATIONS PORT (CN3)
RS232-C communication is used to allow connection of the 9100 to a printer. Printouts of the user text (12 characters) and
count or rate value plus engineering units may be initiated from the keyboard or external printer input.
Baud rate, number of stop bits and number of print copies are selected in program mode.
If the printer type is set to IBM/Epson, a PC can be used to remotely execute a Print or Reset:Connect the PC’s serial port
transmit pin to the 9100’s RJ11 receive pin, and send an ASCII P (50 Hex) to execute a Print or an ASCII R (52 Hex) to
execute a Reset.
The data may be read into a PC by connecting the RJ11 transmit pin to the PC’s serial port receive pin, instead of a printer.
In Manual Reset mode only, the 9100 can be automatically reset as soon as a Print is executed (by the keyboard or
externally). This feature can be turned on or off using the Comms/Print menu (see page 6).