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PTS DP1 User Manual
2.3 The Sidepanels
The data interfaces, mode selector switches, and power connector are located on the two metal panels of
the case. Since there is no clear distinction between "front" and "rear" side, they are equally important
sidepanels.
Sidepanel #1
Optical Interface #1
Mode Switches
RS-232 Interface #1
Input
Output
On the sidepanel #1 are located:
•
optical interface OPTICAL #1
•
electrical interface RS-232 #1
•
three mode switches
Sidepanel #2
Optical Interface #2
Power Connector
RS-232 Interface #2
Input
Output
On the sidepanel #2 are located:
•
optical interface OPTICAL #2
•
electrical interface RS-232 #2
•
the power connector
LED Indicators
Each terminal of the optical interfaces (transmitter and receiver) has a LED assigned, indicating the light
level present on the terminal. There are three different conditions indicated:
•
Constant green:
no light
•
Constant
red:
light
•
Blinking:
activity (light level is changing)
The LED indicator at the power connector lits green if power is supplied.
Interface Assignments
In the following examples, the primary station (control center) is connected to interface OPTICAL #1, and the
secondary device (relay, field device) is connected to interface OPTICAL #2.
However, the PTS DP1 is completely symmetrical and the interfaces can be used in either direction.
