Publication 1404-UM001D-EN-E - October 2004
4-2
Communications
Native RS-485 Communications
Your Powermonitor 3000 is set up to communicate via its native
RS-485 port when you first power it up, except for units with an
optional RS-232 communication port. The communications
configuration includes the following parameters:
•
Protocol:
Allen-Bradley DF1 half-duplex slave, Modbus RTU
slave, or auto-sense. Default auto-sense
•
Data rate:
Range 1200, 2400, 4800, 9600, 19,200 baud. Default
9600
•
Delay:
Range 0 to 75 mS, 10 mS default
•
Data Format:
8 data bits, 1 stop bit, no parity, odd parity or
even parity. Default no parity
•
Node address:
Range 1 to 247, default is the same value as the
unit ID listed on the nameplate
•
Inter-character timeout
: Range 0 to 6553 msec. Default 0 (= 3.5
character times)
The
Delay
parameter is the time the Powermonitor 3000 waits before
its response to an external request. Certain communications
equipment requires such a delay for reliable operation.
To change your native port configuration, use the Display Module
under the
PROGRAM
>
NATIVE COMMUNICATIONS
menu.
You may connect your Powermonitor 3000 into an RS-485 network
with up to 32 nodes connected with 2-conductor shielded twisted pair
cable with a maximum cable length of 1,219 meters (4,000 ft.). The
maximum data rate supported by the Powermonitor 3000 is 19.2
Kbaud. You must use a device configured as a master to communicate
with this port. Error checking method is CRC (Cyclic Redundancy
Check). All devices on the RS-485 network must be set at the same
data rate.
TIP
The native communications port does not support
Data Highway 485 (DH-485) communications.
Although DH-485 uses the RS-485 physical media, its
protocol is not compatible with the DF1 protocol.
Содержание 1404-M4
Страница 1: ...Bulletin 1404 Powermonitor 3000 1404 M4 1404 M5 1404 M6 1404 M8 User Manual Allen Bradley HMIs ...
Страница 6: ...Publication 1404 UM001D EN E October 2004 Table of Contents 4 ...
Страница 26: ...Publication 1404 UM001D EN E October 2004 2 14 Product Description ...
Страница 264: ...Publication 1404 UM001D EN E October 2004 C 10 Sample Applications ...
Страница 277: ...Publication 1404 UM001D EN E October 2004 Sample Applications C 23 Ladder Diagram Allen Bradley HMIs ...
Страница 278: ...Publication 1404 UM001D EN E October 2004 C 24 Sample Applications ...
Страница 279: ...Publication 1404 UM001D EN E October 2004 Sample Applications C 25 Allen Bradley HMIs ...
Страница 280: ...Publication 1404 UM001D EN E October 2004 C 26 Sample Applications ...
Страница 285: ...Publication 1404 UM001D EN E October 2004 Sample Applications C 31 Allen Bradley HMIs ...
Страница 304: ...Publication 1404 UM001D EN E October 2004 D 6 Technical Specifications ...
Страница 324: ...Publication 1404 UM001D EN E October 2004 F 18 Powermonitor 3000 EtherNet IP Device Profile ...
Страница 340: ...Publication 1404 UM001D EN E October 2004 G 16 Powermonitor 3000 ControlNet Device Profile ...
Страница 354: ...Publication 1404 UM001D EN E October 2004 6 Index ...
Страница 355: ...Allen Bradley HMIs ...