Rockwell Automation 1398-DDM-xxx USE MNL/ULTRA 200 DIG.SERVO.DR - Manual (Page 100)

Publication 1398-5.0 – October 1998
6-36 Interfaces
Serial Communications Overview
ULTRA 200 Series drives communicate via a standard NRZ (non-
return to zero) asynchronous serial format, which supports either RS-
232 or four wire RS-485. The pin-out arrangement on the drive serial
ports provides self-sensing of the communication standard. To change
from RS-232 to four wire RS-485 requires a simple change of the
cable.
In multiple drive installations, a unique address must be assigned to
each drive, either through hardware (a physical address) or software.
All physical addresses are set using the 16 position rotary switch on
the front panel of the drive. Software based addresses are selected by
setting the rotary switch to position F, as shown, which forces the
drive to used the address stored in the personality module EEPROM
of the drive.
The following table shows the relationship between drive addresses,
whether set by hardware or software. It also lists the communications
settings, whether mandatory (default) settings or software selectable.
Figure 6.38 Sixteen Position Rotary Addressing Switch
Intro
0
1
2
3 4 5 6
7
8
9
A
BC
DE
F
Table 6.25: Drive Addressing
Address Range Communications
Hardware
1
Software
1
0 N/A Factory Default
• 9600 baud rate
• 8 Data
• 1 Stop Bit
• No Parity
1–A N/A Software Selected Settings include:
• 1200, 2400, 4800, 9600 and 19200 baud rates
• 8 Data Bits
• 1 Stop Bit
• Even, Odd or No Parity
B–E N/A Reserved
F 1–32 Software Selected
1. Hardware (rotary address switch) and software (address and communications
settings) changes are not immediate; they are logged but do not become active
until
after the drive is RESET.