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Rs-232/485 interface circuit, J5 - serial port connector pin-outs – Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual User Manual

Page 96

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Publication 1398-5.2 – PDF 1997

6-32

Interfaces

The serial interface of the drive uses the standard NRZ asynchronous
serial format, and supports both the RS-232 and the four wire RS-485
communications standards.

Standard baud rates include 1200, 2400, 4800, 9600 and 19200
baud. 9600 is the factory default setting.

Even, odd, and no parity generation/checking are supported. No
parity is the factory default setting.

The maximum number of ULTRA 100 Series drives allowable on
a four-wire RS-485 bus is 32.

The maximum length of an RS-232 cable is 15 meters (50 feet).

The maximum length of an RS-485 cable is 1220 meters (4000

feet) with 0.20 mm

2

(24 AWG) wire.

Cables are available in various lengths for connecting between the
serial port of a drive and a control unit, such as a PC. Appendix A,
“Options and Accessories” l
ists the cables, and the male and female
connectors for the cables.

Table 6.24 lists the pin-outs for J5.

Figure 6.39

RS-232/485 Interface Circuit

EXT

INT

XMT

RCV

XMT-
XMT+

RCV+
RCV-

RS-232

RS-485

TRANSMIT

RECEIVE

TRANSMIT
ENABLE

Note: The shell of the connector is grounded to the chassis for shield
termination.

Table 6.24:

J5 - Serial Port Connector Pin-Outs

Auxiliary
Encoder
Input

Pin Number

Description

RCV (+)
RCV (-)

J5 - 1 (+)
J5 - 7 (-)

RS-485 differential receiver input (to drive)

XMT (+)
XMT (-)

J5 - 4 (+)
J5 - 8 (-)

RS-485 differential transmitter output (from
drive)

COM

J5 - 5

Common serial port interface

J5 - 6

Reserved

a