Hardware Configuration - GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual

4.2 745PC SOFTWARE INTERFACE
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The 745PC software can communicate to the 745 via the front panel RS232 port or the rear terminal RS485 ports. Figure
9.2 shows the connections required for the RS232 front panel interface which consists of the following:
• A standard "straight through" serial cable with the 745 end as a DB-9 male and the computer end as DB-9 or DB-25
female for COM1 or COM2 respectively.
The following figure shows the required connections and equipment for the RS485 rear terminal interface. The interface
consists of the following:
• GE Multilin F485 RS232-to-RS485 converter.
• A standard "straight through" serial cable connected from your computer to the GE Multilin F485 Converter box. The
converter box end should be DB-9 male and the computer end DB-9 or DB-25 female for COM1 or COM2 respectively.
Shielded twisted pair (20, 22 or 24 AWG) cable from converter box to the 745 rear terminals. The converter box (+, –, GND)
terminals end up connected to (B1, B2, B3) respectively. The line should also be terminated in an R-C network (i.e.
120 ohm, 1 nF) as described in Section 3.2.15: RS485 / RS422 Communications on page 3–12.
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Courtesy of NationalSwitchgear.com
Create a new setpoint file with factory defaults
Open an existing file
Save setpoints to a file
Configure 745PC when in FILE EDIT mode
Send a setpoint file to the relay
Print a relay or file setpoints
Exit the 745PC program
Edit 745 Setup setpoints
Edit System Setup setpoints
Edit Logic and Virtual Input setpoints
Edit Protection Element setpoints
Edit Output setpoints
Perform diagnostic testing
Edit User Memory Map registers
View status of logic inputs and output relays
View metered values
View contents of Event Recorder
View product revision and calibration dates
View/select parameter trending
View/initiate waveform capture
Set computer communications parameters
Dial a phone number using the modem
View/modify memory map locations
Update relay firmware
Display the 745 Instruction Manual
Display help on using Windows Help
Display 745PC program information
Figure 4–3: 745PC TOP LEVEL MENU SUMMARY
745 Transformer Management Relay
4 HUMAN INTERFACES

4.2.4 HARDWARE CONFIGURATION

GE Multilin