32
EN Drive Installation Manual
output resolution is 2048 lines per motor revolution. This resolution is adjustable in one
line per revolution increments with PowerTools software. The range is between 1 and the
actual motor encoder density.
Serial Communications
Serial communications with the drive is provided through the female DB-9 connector located
on the front of the drive. The serial interface is either three wire non-isolated RS-232C or two
wire non-isolated RS-485. RS-485 is also available through the 44-pin Command Connector.
Figure 31: EN Drive RS-232 and RS-485 Internal Connections between the Command
Connector and the Serial Communication Connector
When connecting the serial port of your PC to the serial port of the drive, verify that your
PC’s ground is the same as the drive PE ground. Failure to do so can result in damage to
your PC and/or your drive.
Note
Communication errors can usually be avoided by powering the computer or host device
off of a convenience outlet that is mounted in the enclosure and whose neutral and ground
are wired to the same single ended point ground that the drives and controllers are using.
This is sometimes beneficial even with battery powered computers.
Front View
RS-485 -
RS-485 +
6
12
21
To d ri ve
processor.
RS-485 -
N/C
N/C
+ 5
Comm Common
7
6
5
4
8
9
RS-485 +
TX (232)
RX (232)
Shield
1
2
3
PE
Single point
ground
10 Ohm
J4
J5
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