Section 40
00-02-0787
2015-03-23
~ 43 ~
Communications
CAN
CAN port designated for J1939 communications.
RS-485
RS-485 port designated for Modbus RTU (slave) for SCADA. Modbus is
available on this port using the Modbus map detailed in the Registers
section on the following page.
NOTE
:
Modification to controller is required to use these ports
– changes include additional wiring and enclosure
modifications.
CPU PCB WIRING INTERFACE LIST (JP5) MOLEX 4 PIN CONNECTOR
EMS PRO LITE
Pin Assignment
Hardware Assignment
Program Function
Assignment
1
RS-485 +
SCADA
3
RS-485 -
SCADA
2
Ground
4
B
RS-232
RS-232 port designated for Modbus RTU (slave) for SCADA and to
upload the actual operating program.
NOTE
: Modification to controller enclosure is required to use
these ports.
CPU PCB Wiring Interface (J2) DB9 Connector
EMS PRO LITE Pin
Assignment
Hardware
Assignment
Program Function
Assignment
2
RS-232 RX
SCADA
3
RS-232 TX
SCADA
5
Ground
7
RS-232 RTS
8
RS-232 CTS
Содержание Murphy EMS PRO LITE
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