Modbus RTU with EM6400 meters as slaves
I have the meters online on RTU (active and operable) but not sending any energy values (invalid). have used the addresses as per the EM400 manual. Im interested in the following FwdWh,FwdVARh,FwdVARh,RevWh,RevVARh,RevVARh
Asked 9 months ago
Answers
0
Hi,
Regarding Modbus RTU Communication for EM6400 MFM check the below points,
1.Check the Daisy chain connection of cables in MFM.
2.Try connecting Modbus Scan read the value of MFM.
3.In MFM Baudrate, Address, Parity setting need to be done.
Check the above points apart from this share some screen shots of Modbus programming with error code.
give more details about version of system.
Regarding Modbus RTU Communication for EM6400 MFM check the below points,
1.Check the Daisy chain connection of cables in MFM.
2.Try connecting Modbus Scan read the value of MFM.
3.In MFM Baudrate, Address, Parity setting need to be done.
Check the above points apart from this share some screen shots of Modbus programming with error code.
give more details about version of system.
Answered 9 months ago
0
Hi,
What type of converter device are you using to process the data? And are you able to read the data on modscan using the register mapping details. Try using the following register details on modscan first:
FwdWh 3961
FwdVARh 3963/3965
RevWh 3969
RevVARh 3971/3973
In modscan put the start address as the above and length as 2. Make sure to check the modbus settings on both sides(MFMs, and your PC device manager COM settings/modcsan) are same as mentioned by Deepak.
If you are using ABB RTU device or Control builder, then give start address as = Address-1. Like for FwdWh you have to use 3960.
Hope it helps..
What type of converter device are you using to process the data? And are you able to read the data on modscan using the register mapping details. Try using the following register details on modscan first:
FwdWh 3961
FwdVARh 3963/3965
RevWh 3969
RevVARh 3971/3973
In modscan put the start address as the above and length as 2. Make sure to check the modbus settings on both sides(MFMs, and your PC device manager COM settings/modcsan) are same as mentioned by Deepak.
If you are using ABB RTU device or Control builder, then give start address as = Address-1. Like for FwdWh you have to use 3960.
Hope it helps..
Answered 9 months ago
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