INFICON SRT-422 Crucible Indexer - Manual (Page 49)

Installation Page 47
Pin 5 (POCKET GOOD Output)
This output is high when the selected pocket is within 5° of the calibrated home position.
Directions for using this signal as the indexer’s interlock are provided above.
Pin 6 (External Supply Ground)
If you are providing +24 V dc from an external source to power the I/Os, either this pin or pin
15 must be connected to the ground of the external power supply.
Pin 10 (External Supply Positive Input)
Pin 10 is the input point for the externally supplied +24 Vdc that can be used to power the I/Os.
The control unit’s opto-isolator PC board must be reconfigured if you wish to use 24-V I/Os.
Pins 11, 12, and 13
Not used.
Pin 14 (Internal Supply Ground)
If you are using the internally supplied voltage (9 Vdc) to power the I/Os, a ground for this
supply must be connected to pin 14 the unit is factory configured to operate with this voltage.
Pin 15 (External Supply Ground)
This pin is internally connected to pin 6. Ground for the external supply can be connected to
either pin.
Section 3.14: making system connections via the rear panel rs232 interface
The RS-232 connector on the control unit’s rear panel enables you to establish serial
communications between the SRT-422 and a host computer, a deposition controller, or
another system component. This section describes the interconnection details. For further
information on implementing serial communications see the section on serial protocol.
The user must supply cabling for RS-232 communications. The figures below show the pin-by-
pin connections required. The figure shows how the 9-pin male connector that would plug into
the indexer’s RS-232 port must be wired to a 9-pin connector that would plug into the RS-232
port on an external device. Figure also shows how the 9-pin male connector that would plug
into the indexer must be wired to a 25-pin connector that would plug into the external device.