Rockwell Automation 1398-DDM-xxx USE MNL/ULTRA 200 DIG.SERVO.DR - Manual (Page 105)

Publication 1398-5.0 – October 1998
Interfaces 6-41
Multiple Axes Four-Wire RS-485 Communications
1. Set the rotary address switch on each drive to an unassigned
address:
• If physical addressing is used, set the rotary switch to a previ-
ously unused address (1-A).
• If software addressing is used, set the rotary switch to address
F and then select a previously unused address (1 - 32) in
ULTRA Master.
2. Connect cables between:
• The host computer and the serial port on the initial drive (J4)
in the multiple drive configuration.
• The other serial port on the initial drive (J5) and the serial port
on the next drive (J4) in the multiple drive configuration
3. Verify the communication settings on the computer are correct:
• Start ULTRA Master on the attached PC
• Choose CANCEL from the Drive Select window
• Select Communications from the menu
• Select PC Set Up from the pull down menu.
• Verify the port settings, and if necessary, change them, then
choose OK.
4. Verify the ability to communicate between the computer and the
connected drives by:
• Switch drive power to ON
• Select Communications from the menu
• Select Read Drive Parameters from the pull down menu
• Select the drive to communicate with from Drive Select win-
dow (the drive must have an address that matches one of the
drive addresses in the chain)
• Choose OK in the Drive Select window.
5. Verify that ULTRA Master loads the drive parameters. If not,
refer to the troubleshooting section.
6. Repeat the preceding two steps for each additional drive.
Note: Do not connect any device to J4-6, J4-9, J5-6 or J5-9 except an
Allen-Bradley TouchPad.
Note: Address 0 is the preferred address for the initial configuration
of a drive. It forces the drive to the default communications parameters.