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RS232/485 Port
The RS232/485 Port (Figure 2-8) is used to communicate with the COM port of the
PC during setup and programming. The Port is used to communicate with the
controller using RS–232, RS–422, RS–485 or Current Loop (20 mA) operation.
The connection method determines the communication mode, Figures 2-6 and
2-7. The RS232/485 Port connector is a 15 pin D sub type.
Use Baldor RS232 cable, CBL034–501 (9.8 ft, 3m); Gender Changer,
OPT033–501.
Use a null modem cable to connect the panel to a PC for programming, Figure
2-6. The COM port connector is a DB 9 pin female.
HMI Panel
(DCE)
HMI Panel
(DCE)
2-4 Receiving & Installation
Table 2-1
Port connector and pin assignment
Pin
Description
1
Frame Ground
2
RXD
3
TXD
4
+5 V output (Max 100mA)
5
GND
6
CHA–
7
CHB–
8
TX+ 20 mA
9
TX– 20 mA
10
RTS
11
CTS
12
RX+ 20 mA
13
RX– 20 mA
14
CHA+
15
CHB+
Figure 2-6 RS232 Connections
Null Modem Cable Connections
232/485 Port
Frame Ground – 1
RXD – 2
TXD – 3
GND – 5
RTS – 10
CTS – 11
Figure 2-7 RS485 Connections
Twisted Pair Cable Connections
232/485 Port
Frame Ground – 1
TX+ –14
TX– – 6
RX+ – 15
RX– – 7
Ground – 5
2 – RXD
Computer
3 – TXD
COM
Port
5 – GND
8 – RTS
(DTE)
7 – CTS
1 – RX+
Computer
6 – RX–
COM
Port
4 – TX+
9 – TX–
(DTE)
5 – Ground
MN1272
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