Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 Master Module Installation Instructions - Manual (Page 39)

Powermonitor 3000 Master Module 39
Publication 1404-IN007F-EN-P - November 2009
Optional RS-232 Communication
Powermonitor 3000 units with a catalog number ending in -232 are equipped with an RS-232
serial communication port in addition to the native RS-485 port. The RS-232 communication
standard supports point-to-point communication among two stations or nodes. You must
select either optional RS-232 communication or native RS-485 communication. The two
ports do not operate at the same time.
The optional RS-232 communication port is a data communication equipment (DCE) type
device. It requires a straight-through RS-232 cable to connect with personal computers,
programmable controller serial ports, and other data terminal equipment (DTE) devices. It
requires a crossover cable for connection to a modem or other DCE devices. No terminating
resistor is required.
The maximum cable length is 15.24 m (50.0 ft). Refer to the following wiring diagrams for
cable pinout information for constructing your own cable using DB-9 and/or DB-25
connectors.
Connecting Powermonitor 3000 Unit to Computer Communication Port
Powermonitor 3000
5
9 6
1
2
1
3
4
7
8
9
6
5
TXD
No connect
No connect
No connect
RXD
RTS (See Note 1)
CTS (See Note 1)
DSR (See Note 2)
GND
3
2
4
5
7
3
2 2
3
8
7 7
8
5 5
TXD
RXD
CTS (See Note 1)
RTS (See Note 1)
GND
TXD
RXD
RTS (See Note 1)
CTS (See Note 1)
GND
DB9 Female
13
25 14
1
DB-25 Female
5
9 6
1
DB9 Female
5
9 6
1
DB9 Female
Powermonitor 3000 Device IBM Personal Computer IBM Personal Computer -
Notes:
1) Required only if you have
enabled hardware handshaking.
2) Internally pulled active in this DCE
device - function not supported.
3) Straight-through RS-232 cable required.
RS-232
–
–
–
Output
Input
Ground
Output
Input
Output
(See Note 3)
Or PLC Processor
Or SLC Processor
Or ControlLogix Processor
IBM Compatible
Personal Computer
SLC 500 Ch 0 PLC-5 Ch 0 - DB-25 Male