EGCP-2 Engine Generator Control Package Manual 26076
44 Woodward
Location Description Signal Output Rating
35 Idle Rated/Load SW C (DO12) “
34 Idle Rated/Load SW NO Discrete Output (DO12) “
36 No Connection Isolation Boundary
Communication Ports: RS-485 & RS-422 (1 each)
Location Description Signal
77 – 485 Communication Inter-control Communications
76 + 485 Communication Inter-control Communications
78 485 Shield
80 +5 Vdc common Internal Isolated Power Supply
79 +5 Vdc Internal Isolated Power Supply
81 422 Communication RX+ PC interface
82 422 Communication RX– PC interface
83 422 Shield
84 422 Communication TX+ PC interface
85 422 Communication TX– PC interface
Specifications
Communications:
RS-422 protocol
9600 Baud (fixed maximum)
No Parity
1 Stop Bit
Minimum Computer Requirements:
Windows 95
Hardware Connections
Once the software is installed on the computer hard drive, the hardware
connection between the computer and the EGCP-2 control must be made for
correct communication between the two devices. This hardware connection is
completed using a direct cable connection between the computer and the EGCP-
2 control(s) RS-422 network.
Modbus/ServLink Communications
The laptop or desktop computer which will be used with the EGCP-2 RS-422 port
will have a 9-pin serial port. This port is configured by the computer hardware to
use a serial communications protocol called RS-232. The details of this protocol
are not important to know for hardware connection to the EGCP-2 control(s),
other than there is a need to convert the RS-232 protocol of the computer port to
RS-422 protocol used by the EGCP-2 control network. This conversion is
accomplished via an external conversion module which takes the 9-pin RS-232
serial port input from the computer, and changes it to a RS-422 protocol for the
EGCP-2. These converters can be found in most computer or electronics stores,
and are called RS-232 to RS-422 Converters. Woodward offers a cable, 5417-
551, that includes this converter. This cable is designed for point-to-point
communications.
To Next Page
Loading...
