Test Serial Communication Port Rp1; Figure 218: Rp1 Physical Connection - GE MiCOM P40 Agile Technical Manual

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5. Check the operation with the continuity tester.
6. Measure the resistance of the contacts in the closed state.
7. Reset the output relay by setting the Contact Test cell to Remove Test.
8. Repeat the test for the remaining output relays.
9. Return the IED to service by setting the Test Mode cell in the COMMISSION TESTS menu to Disabled.
5.2.10

TEST SERIAL COMMUNICATION PORT RP1

You need only perform this test if the IED is to be accessed from a remote location with a permanent serial
connection to the communications port. The scope of this test does not extend to verifying operation with
connected equipment beyond any suppied protocol converter. It verifies operation of the rear communication port
(and if applicable the protocol converter) and varies according to the protocol fitted.
5.2.10.1 CHECK PHYSICAL CONNECTIVITY
The rear communication port RP1 is presented on terminals 16, 17 and 18 of the power supply terminal block.
Screened twisted pair cable is used to make a connection to the port. The cable screen should be connected to pin
16 and pins 17 and 18 are for the communication signal:

Figure 218: RP1 physical connection

For K-Bus applications, pins 17 and 18 are not polarity sensitive and it does not matter which way round the wires
are connected. EIA(RS)485 is polarity sensitive, so you must ensure the wires are connected the correct way round
(pin 18 is positive, pin 17 is negative).
If K-Bus is being used, a Kitz protocol converter (KITZ101, KITZ102 OR KITZ201) will have been installed to convert
the K-Bus signals into RS232. Likewise, if RS485 is being used, an RS485-RS232 converter will have been installed.
In the case where a protocol converter is being used, a laptop PC running appropriate software (such as MiCOM S1
Agile) can be connected to the incoming side of the protocol converter. An example for K-bus to RS232 conversion
is shown below. RS485 to RS232 would follow the same principle, only using a RS485-RS232 converter. Most
modern laptops have USB ports, so it is likely you will also require a RS232 to USB converter too.
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Chapter 21 - Commissioning Instructions
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