Rockwell Automation 44887-PUB, 44887 Enwatch - Manual (Page 14)

Publication GMSI10-UM031C-EN-E - January 2009
10 Installing the Enwatch
Serial Port (RS-232)
An RS-232 compatible serial port is available on connector J11 for providing
local communication with the board (independent of the Ethernet network).
Only RXD and TXD lines are supported, and so a null modem cable must be
used. An on-board software monitor is provided to communicate through the
serial port.
If you do not use a 9-pin female to female null modem cable, the
recommended cable connection to a PC is shown in Table 1.15.
Supply Voltage
Incoming supply voltage to the power supply is 80 to 240 VAC / 50 or 60 Hz.
The power supply should be rated for a minimum of 1 A. If you have an
ISSUE F board, set the AC to DC power supply output voltage to 9 VDC. All
ISSUE G boards and higher, require a 24 VDC power supply. The power
supply that comes with the ISSUE G boards is pre set to 24 VDC and should
not be adjusted.
Table 1.15 J11 cable connections
J11 9-Pin D-Shell Connector
1 2
2 3
3 5
WARNING
Never attempt to connect the ISSUE F board to a 24V
power supply as doing this will damage the board. Always
ensure you have the proper power supply for the board
ISSUE you are using. The 24VDC power supply for ISSUE
G and higher boards has a yellow label that is marked
24VDC. The 12VDC power supply for ISSUE F boards
has a blue label that is marked 12VDC.
TIP
The ISSUE letter is located on the board. ISSUE F is
located at the bottom edge of the board near the J2
connector. See Figure 1.2 on page 4.
The ISSUE letter for ISSUE G and higher boards is
located in the upper left corner of the board, near the J8
connector.