Allen-Bradley Powermonitor 3000 User Manual page 63

Allen-Bradley HMIs
Table 4.1 Native Communication Configuration Summary
Parameter Description
Protocol
Delay Time between receiving
a request and
transmitting a response
Baud Rate RS-485 port
communications bit rate
RS-485 Address Uniquely identifies the
Powermonitor device on
a multi-drop network
Data Format Data bits / Stop bits /
Parity
Inter-Character Mimimum delay
Timeout between characters that
indicates end of Modbus
message packet
Optional RS-232 Communications
Powermonitor 3000 units with a catalog number ending in "-232" are
equipped with an optional RS-232 serial port in addition to the native
port. These units are set up at the factory to communicate using the
optional port using the Allen-Bradley DF1 half-duplex slave protocol.
The configuration parameters are:
• Protocol: Allen-Bradley DF1 half-duplex slave, Modbus RTU
slave, 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
• Node address: Range 1 to 247, default is unit ID listed on
nameplate
• Data Format: 8 data bits, 1 stop bit, no parity or even parity.
Default no parity
Communications
Range Default
DF1 Auto-Sense
Half-Duplex
Slave
Modbus RTU
Slave
Auto-Sense
0 to 75 mS 10 mS
1200 baud 9600 baud
2400 baud
4800 baud
9600 baud
19200 baud
1 to 247 Unit ID number
8 / 1/ none 8 / 1 / none
8 / 1/ even
8 / 1/ odd
0 to 6553 ms 0 (= 3.5
character times)
Publication 1404-UM001D-EN-E - October 2004
4-3
User
Setting