VALVE-INLET 1220322 - Caterpillar

The following tables contain information about the signals of the control panel. The data in the tables is available from the 2 Modbus ports. The ports are located in the control panel on the top slot of the PLC back plane.Refer to the Systems Operation, "Marine Monitoring System Configuration" for information about the setup of communications.Reference"Gould Inc. Publication PI-MBUS 300 REV B"The data link is configured for the following settings:
8 data bits
1 stop bit
No parityThe node address and the baud rate can be configured by the user.Interfacing With a Shipyard
Provide table 3, table 4, table 7, table 8, and table 9.Provide the following list of information about the configuration:
The Generator Monitoring System (GMS) protocol for output is Modbus.
Ports for hardware are available. The ports have 9 pins. The RS-485 has one connection with 2 wires and two connections with 4 wires. The RS-232C has one handshaking connection and two connections without handshaking.
Provide the list of baud rates.
The network addresses can be a number between 1 and 247.
The system uses a serial cable that has 9 pins. The cable has shielding.Control System Inputs to PLC Redundant Relay Logic
Table 1
PLC I/O Address    Sensor Description    PLC Alarm Address    Signal Type    Alarm    Shut Down    Setpoint Trip    Comments    
Pressure Contactors    
I:2.0/1
(I:2.0/0)     Engine Low Oil Pressure: 144-0102     B16:105/2     DIGITAL         X     Close Contact