Connection To A Personal Computer - KEP MMI-1500 Installation & Operation Manual

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.
This port can be attached to a Computer via a special DB9 Female to DB9 Female cable provided
Connection
with the unit. (KEP P/N: MT5_PC)
This port is activated automatically by the PC during: On line simulation, Download and Upload
Port Activation
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 assignment of the 9 Pin, Male, D-SUB PC [RS-232] & PLC [RS-485] Port
Pin Designations
PC [RS-232] &
PLC [RS-485]
Pin # Symbol
1
2
3
4
5
6
7
8
9
HMI to PC, MT5_PC Cable Configuration
Connect to
Personal Computer (PC)
RS232 Serial Port
DB9 Female
1 Not used
7 Not used
8 Not used
4 Not used
5 GND
6 Not used
2 TxD
3 RxD
9 Not used
PLC[RS485] 2 Wire PLC[RS485] 4 Wire AUX[RS485] 2 Wire PC[RS232]
PLC RxD- Transmit/Receive -
PLC RxD+ Transmit/Receive +
PLC TxD-
PLC TxD+
GND Signal Ground
AUX Data +
PC TxD
PC RxD
AUX Data -
Connect to
HMI (HMI)
RS232/485 [PLC]
DB9 Female
1 RX-
2 RX+
3 TX-
4 TX+
5 GND
6 AUX Data +
7 TxD
8 RxD
9 AUX Data -
RS485 Receive
RS485 Receive
RS485 Transmit
RS485 Transmit
Signal Ground Signal Ground
Transmit/Receive +
Transmit/Receive -
Connect to
Controller
RS485 Port
DB9 Male
1 RX-
2 RX+
3 TX-
4 TX+
5 GND
6 AUX RS485+
7 Not used
8 Not used
9 AUX RS485-
9
Signal Ground
RS232 Transmit
RS232 Receive
PC
PLC
HMI
RS485