Siemens 7MF4997--1DA Betriebsanleitung Seite 12

Koppelmodul für SIMATIC PDM Betriebsanleitung
Interface for SIMATIC PDM Operating Instructions
You may have to assign your software to the COM port used by your interface.
The interface is transformer isolated and is polarity insensitive. Transformer isolation al-
lows you to connect the interface across the current sense resistor or the across the field
device. Do not connect the interface across the power supply; you cannot damage the
unit, but communication cannot occur. Polarity insensitivity means that you may attach
either one of the test clips to positive and negative poles. You do not have to check the
direction of current flow before connecting the unit.
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C73000--B7164--C170--2