4.2. Connections using the [GPI IN / OUT] connectors
The GPI connectors on the rear panel can be used as GPI (General Purpose Interface) input/output connectors.
These connectors provide six GPI IN ports and four GPI OUT ports. For example you could use an external switch
to control parameters inside the PC-D/DI series unit, or cause operations on the PC-D/DI series unit to send
control signals to an external device.
The following illustration shows an example of an external circuit that controls GPI via a GPI connector.
The [IN]-1–6 pins detect voltages for a "L" signal (0V) or a "H" signal (5V). The [OUT]-1–4 pins output a "L" signal
(0V) or a "H" signal (5V).
Example: Using a switch to control the PC-D/DI series
unit
Example: Illuminating the LED of an external device
from the PC-D/DI series unit
IN
+V
4.2.1. Cable management
• When attaching a cable to a Euroblock plug, strip the wire as shown in the illustration, and use stranded
wire to make connections. In the case of Euroblock wiring, stranded wire may break more easily due to
metal fatigue caused by the weight or vibration of the cable. Use the included cable ties to secure the
cables to the tab.
CAUTION
When using stranded wire, do not tin the strands with solder.
• If connections will be frequently plugged and unplugged, as in a portable setup, we recommend that you
use rod terminals equipped with insulating sleeves. Use rod terminals whose conductor section is as
shown below.
External diameter 1.3mm or less, and length approximately 5mm
(such as the AI0, 5-6WH made by the Phoenix Contact company)
4. Connections
12
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