C h a p t e r 2 : P r e p a r i n g t h e e P r o P S f o r O n l i n e U s e
2 1
Connecting to the Serial Ports
The external serial ports may be used for communications with a PLC or controller.
Serial port 1 (COM1) support RS232 (default), RS422, RS485, and RS485+
communications while serial port 2 (COM2) supports RS232 only. Serial port 2 (COM2)
is used for the touchscreen on the Blind Node models.
Pin
RS232
RS422 RS485 RS485+
1
DCD, Data carrier detect
TX-
DATA-
DATA-
2
RXD, Receive data
TX+
DATA+
DATA+
3
TXD, Transmit data
RX+
Do not connect Do not connect
4
DTR, Data terminal ready
RX-
Do not connect Do not connect
5
Signal Ground
Signal Ground
Signal Ground
Signal Ground
6
DSR, Data set ready
Do not connect
Do not connect Do not connect
7
RTS, Request to send
Do not connect
Do not connect Do not connect
8
CTS, Clear to send
Do not connect
Do not connect Do not connect
9
RI, Ring Indicator
Do not connect
Do not connect Do not connect
Caution:
Your PanelMate ePro PS unit is equipped with port isolation on serial port 1
(COM1) only. Check for any ground potential difference between your communication
equipment and your PanelMate ePro PS unit. If there is a ground potential difference,
your communication equipment will need to be isolated.
Setting COM1 Jumpers for RS232 or RS422-485
Serial port 1, COM1, can be configured to support RS232 (default), RS422, RS485, or
RS485+ communications by configuring the jumper settings on the board. The board
can be accessed by removing the back cover of the unit. The location of the jumpers and
their proper settings are shown below.
Caution:
The CompactFlash card must be removed before removing the back cover of
the unit.
Note:
Jumpers are included in the Accessory Kit that is provided with each ePro PS unit.
