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Flowmeter reading

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Hello all.

I'm, trying to read flow meter value from E&H flowmeter to FX3G PLC. Coomunication Estabilished from and to PLC. RD and SD in Modbus module both was blinking. 

I use ADPRW H1 H3 H7E2 K1 D3. E&H flowmeter station 1 and register 2017 (7E2) (temperature). But result or value in D3 remain 0.

FYI, In E&H manual, register was written 2017 - 2018 (for temperature) and data type as float. 

Is there anything left in my program?

Thank you 

Screenshot 2022-02-04 133238.jpg

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First thing I notice is that M8063 is on, indicating a MODBUS communication error, and by being on, it is moving H1 into D8063 - which is supposed to hold the MODBUS communication error code. Also, you're trying to write to D8063 outside of the M8411 MODBUS configuration block.

In the configuration block, you're writing H1 to D8419, but that's listed as a read only address.

2017 in hex is 7E1. 7E2 is 2018. if you want to read 2017 AND 2018, shouldn't you have K2 instead of K1 in between the MODBUS Register address and the PLC device head address?

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On 2/4/2022 at 7:51 PM, tiagru said:

First thing I notice is that M8063 is on, indicating a MODBUS communication error, and by being on, it is moving H1 into D8063 - which is supposed to hold the MODBUS communication error code. Also, you're trying to write to D8063 outside of the M8411 MODBUS configuration block.

In the configuration block, you're writing H1 to D8419, but that's listed as a read only address.

2017 in hex is 7E1. 7E2 is 2018. if you want to read 2017 AND 2018, shouldn't you have K2 instead of K1 in between the MODBUS Register address and the PLC device head address?

Thank you for your correction on D8063. I've made correction on D8063 along with M8411 block. But error 6321 in D8063 only happens when i connected modbus port of E&H, other devices no problem (SDC36 temp control, PXR4 temp control, Delta PLC C2000 Series).  As I read from manual D8419 is to check communication mode, which 9 is Modbus connection. 

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On 2/5/2022 at 4:59 AM, limcm said:

Hi, I attached the China made fx3g which is coolmay plc.
Most modbus function code 01,02,03,04,15,16 are in.
There are five modules in connection which contains coils, ampere , temperature and voltage.
https://www.modbustools.com/download.html download the slave then link the plc to computer using rs485 connection on computer
to simulate the modbus slave modules.

COOLMAY_same as delta.gxw

Thank you for your help. But I can't open the file. Giving me message you write in newer version of gxw. My version is GXWorks2 Version1.605.F

On 2/4/2022 at 7:51 PM, tiagru said:

First thing I notice is that M8063 is on, indicating a MODBUS communication error, and by being on, it is moving H1 into D8063 - which is supposed to hold the MODBUS communication error code. Also, you're trying to write to D8063 outside of the M8411 MODBUS configuration block.

In the configuration block, you're writing H1 to D8419, but that's listed as a read only address.

2017 in hex is 7E1. 7E2 is 2018. if you want to read 2017 AND 2018, shouldn't you have K2 instead of K1 in between the MODBUS Register address and the PLC device head address?

Thank you for your correction on D8063. I've made correction on D8063 along with M8411 block. But error 6321 in D8063 only happens when i connected modbus port of E&H, other devices no problem (SDC36 temp control, PXR4 temp control, Delta PLC C2000 Series).  As I read from manual D8419 is to check communication mode, which 9 is Modbus connection. 

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