Error Using E1 to read/write V850E2/Fx4-L

I follow information on Connection documents for E1/E20 and V850 family.

The connection as shown in 2 pictures below.

The problem I have now is I get error message "No response from Target Microcontroller (FLMD)
The MCU is on a board but not my design and it is an ECU.
The board can be self-powered either from the system or external. I am using external 5.0V
Please advise me.

Parents
  • I have test results between RFP2.05 and RFP3.06 as same RL 78 hardware
    1. RFP v3.06 with E1 emulator good results
    2. RFP v2.05 with E1 emulator bad results
    3. RFP v3.06 with simple circuit type B good results
    4. RFP v2.05 with simple circuit type B good results
    Why E1 emulator doesn't work with RFP v2.05 ?
    I think the problem of V850E2/Fx4-L is the same. But RFP v3.06 is not supported.
    Please advise me.
Reply
  • I have test results between RFP2.05 and RFP3.06 as same RL 78 hardware
    1. RFP v3.06 with E1 emulator good results
    2. RFP v2.05 with E1 emulator bad results
    3. RFP v3.06 with simple circuit type B good results
    4. RFP v2.05 with simple circuit type B good results
    Why E1 emulator doesn't work with RFP v2.05 ?
    I think the problem of V850E2/Fx4-L is the same. But RFP v3.06 is not supported.
    Please advise me.
Children