Specifications

Chapter 1. Installation 13
Trigger Inputs
Chassis Ground
SHLD
GND
Z-
Z+
B-
B+
A-
A+
+5V
ENCODER Connector
TRG-A
TRG-B
OUT-A
GND
P-CUT
+5V
OUT-P
IN-P
AUX-P
Internal Schematic
+5VDC
HCMOS compatible:
Low ≤ 1.00V; High ≥ 3.5V
+5V connected to AUX-P (sourcing current).
Provides +5V power to the TRG input pull-up resistors (the ZETA6104 is shipped from the
factory wired in this configuration). As an alternative, you can disconnect the +5V
jumper and connect AUX-P to an external power supply of up to 24VDC.
NOTE: AUX-P is also the pull-up for the HOM, NEG, POS & P-CUT inputs.
SINKING CURRENT: To make the trigger inputs (and HOM, NEG, POS & P-CUT) sink current, connect AUX-P to GND.
6 . 8 KΩ Resistors
47 KΩ
Resistors
Isolated Ground
74HCxx
74HCxx
I/O Connector
TRG-A/B connected to GND (normally-open switches).
The active level (default is active low) can be changed with the
INLVL command.
These inputs are like the general-purpose inputs on the 50-pin
header. The differences are (1) the triggers are pulled up via
the AUX-P pull-up terminal; and (2) the triggers can be
programmed with the INFNCi-H command to function as
position capture inputs and registration inputs.
Connection to a Sinking Output Device Connection to a Sourcing Output Device
Electronic
Device
Out 5-24 Volts
ISO GND
74HCxx
6.8 KΩ
47 KΩ
Trigger Input
Connection
Ground
Connection
Output
Ground
+5VDC
AUX-P
+5V
GND
Pulled up
to +5V
(sourcing)
The output should
be able to sink at
least 1mA of current.
ZETA6104
ISO GND
Electronic
Device
Out 5-24 Volts
ISO GND
74HCxx
6.8 KΩ
47 KΩ
Trigger Input
Connection
Ground
Connection
Output
Ground
+5VDC
AUX-P
+5V
GND
Pulled
down to
ground
(sinking)
ZETA6104
ISO GND
V
1
R
1
Connection to a Combination of Sinking & Sourcing Outputs
Typical value for R = 450Ω (assuming R
1
= 0)
Note: The value of R may vary depending on the value of R
1
and V
1
.
Electronic
Device
Out 5-24 Volts
ISO GND
74HCxx
6.8 KΩ
47 KΩ
Trigger Input
Connection
Ground
Connection
Output
Ground
+5VDC
AUX-P
+5V
GND
Pulled up
to +5V
(sourcing)
ZETA6104
ISO GND
V
1
R
1
R
If you will be connecting to a combination of sourcing and sinking outputs,
connect AUX-P to +5V to accommodate sinking output devices. Then for each
individual input connected to a sourcing output, wire an external resistor between
the ZETA6104's trigger input terminal and ground (see illustration). The resistor
provides a path for current to flow from the device when the output is active.
PROGRAMMING TIP
Connecting to a sinking output? Set the trigger input's active level to low
with the INLVL command (Ø = active low, default setting ).
Connecting to a sourcing output? Set the trigger input's active level to
high with the INLVL command (1 = active high).
Thus, when the output is active, the TIN status command will report a “1”
(indicates that the input is active), regardless of the type of output that is
connected.
For details on setting the active level and checking the input status refer to the
INLVL and TIN command descriptions in the 6000 Series Software
Reference Guide .