Electrical Connections; Password; Passive Operation - ABB REG316 4 Series Operating Instructions Manual

ABB Switzerland Ltd
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8
Fig. 5.80
5.13.3.2.

Electrical connections

The HMI running on the PC is connected to the device via the
optical interface on the LDU. PC and device are thus electrically
insulated.
A special cable has to be used to connect the PC that converts
electrical into optical signals and vice versa.
5.13.3.3.

Password

Password protection is unnecessary for the LDU.
5.13.3.4.

Passive operation

The user communicates with the RE.316*4 via the LDU in a pas-
sive role, i.e. device and process data can be viewed, but none
of the data or parameters displayed can be changed in any way.
Changes can only be made using the HMI on the PC.
The only exception to this rule is the reset function which is ac-
cessed via the corresponding menu item.
5-104
2 3
C
E
7
Front view of the local display unit (LDU)
REG 316*4 1MRB520049-Uen / Rev. E
1 green LED
2 yellow LED
3 red LED
4
4 LCD
5 CLEAR button
5
6 ENTER button
7 Arrow keys
6
8 Optical serial
interface