9
2.4.2 Connection to a Personal Computer
The 9 Pin, Female, D-SUB, PC [RS-232] & PLC [RS-485] Port on the back of the unit is the programming port (PC
Connector) and RS485/422 communications port for connecting to a controller. The Auxiliary (AUX) RS485 port is also
accessed through this connector.
Connection
This port can be attached to a Computer via a special DB9 Female to DB9 Female cable provided
with the unit. (KEP P/N: MT5_PC)
Port Activation
This port is activated automatically by the PC during: On line simulation, Download and Upload
activities.
The Programmer Port cannot simulate, download or upload to the unit while it is on line with the
controller at the same time. The unit must be put into “RDS” mode with the EasyManager applet
first.
Pin Designations
PC [RS-232] &
PLC [RS-485]
Pin assignment of the 9 Pin, Male, D-SUB PC [RS-232] & PLC [RS-485] Port
Pin # Symbol
PLC[RS485] 2 Wire
PLC[RS485] 4 Wire
AUX[RS485] 2 Wire PC[RS232]
1
PLC RxD-
Transmit/Receive -
RS485 Receive
2
PLC RxD+
Transmit/R
RS485 Receive
3
PLC TxD-
RS485 Transmit
4
PLC TxD+
RS485 Transmit
5
GND
Signal Ground
Signal Ground
Signal Ground
Signal Ground
6
AUX Data +
Transmit/R
7
PC TxD
RS232 Transmit
8
PC RxD
RS232 Receive
9
AUX Data -
Transmit/Receive -
HMI to PC, MT5_PC Cable Configuration
Connect to
Personal Computer (PC)
RS232 Serial Port
DB9 Female
Connect to
HMI (HMI)
RS232/485 [PLC]
DB9 Female
Connect to
Controller
RS485 Port
DB9 Male
1 Not used
1 RX-
Æ
1 RX-
7 Not used
2 RX+
Æ
2 RX+
8 Not used
3 TX-
Æ
3 TX-
4 Not used
4 TX+
Æ
4 TX+
5 GND
Æ
5 GND
Æ
5 GND
6 Not used
6 AUX Data +
6 AUX RS485+
2 TxD
Æ
7 TxD
7 Not used
3 RxD
Æ
8 RxD
8 Not used
9 Not used
9 AUX Data -
9 AUX RS485-
HMI
PLC
RS485
PC
Summary of Contents for MMI-1500
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