Rockwell Automation 1400-SP PowerMonitor Software - Manual (Page 71)

Appendix B
Communications Application Note
B–3
1. If you wish to display the data measured by a Powermonitor on your
computer, you have three options:
a. Use the purchased copy of the Powermonitor Software.
b. You can write your own program to up load and display the data
measured by the device.
c. You can purchase the Bulletin 6190–PMO ControlView Option
package. It requires a PLC–5 and the Bulletin 6200 PLC software
package.
2. If you wish to connect your computer to a single device, then you have
the option of communicating via RS–232C or RS–485.
If the computer is located less than 50 feet from the device you wish to
communicate with, then RS–232C will be suitable.
If the computer is located more than 50 feet from the device (but less than
4000 feet) then it is best to use RS–485 communications. In this case,
you will be required to purchase either:
a. an RS–485 communications port for the computer
or
b. an RS–232C to RS–485 converter device (if the computer is
already equipped with an RS–232C port).
3. If you wish to connect your computer to more than one device, then only
RS–485 will permit this.
!
ATTENTION: Powermonitors that communicate via the
RS–232C standard should never be connected to devices that
communicate via RS–485. If this is attempted, damage to the
RS–485 devices will occur
Considerations When Choosing
Powermonitors With
Communications Capability