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M171 can't write value as Modbus Master

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summersiu
Lieutenant | EcoXpert Master Lieutenant | EcoXpert Master
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M171 can't write value as Modbus Master

I am connecting my M171PBM27R (Act as Master) and my PC act as Slave to transfer value.

However, after I created function 06 and assigned "test1" into it, I still cannot change the value in Watch View.

(For example, I want to change 4 to 5 into Watchview and I can observe the change in Modbus Slave

The value will be auto change back. How can I change the value in Machine Expert?

 

Problem solved😁

 

Master_Write.png

 

 

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Dave_Shore
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Re: M171 can't write value as Modbus Master

@summersiu 

I am not familiar with the Machine Expert product, but I found 

https://community.exchange.se.com/t5/b-ecostruxure-geo-scada-expert-forum/EcoStruxure%2525E2%252584%...

 

Home/Communities/SCADA & Telemetry Solutions/Geo SCADA Expert Forum/EcoStruxure(TM) Machine Expert - HVAC

 

I have often used Modbus Slave, ModPoll, ModScan etc and all work with EBO.

You could test Machine Expert using EBO (the AS is easily configured to work with Modbus RTU/RS485), but ModSlave should also work fine and may be better for simple testing.

See Answer In Context

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Dave_Shore
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Re: M171 can't write value as Modbus Master

Hi @summersiu 

Your question does not seem to involve EBO (this forum), It seems to be Machine Expert (M171?) to Modbus Slave

Is there a forum for the product you are using?

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summersiu
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Re: M171 can't write value as Modbus Master

@Dave_Shore May I know where I can ask question for Schneider Machine Expert?

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Dave_Shore
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779

Re: M171 can't write value as Modbus Master

@summersiu 

I am not familiar with the Machine Expert product, but I found 

https://community.exchange.se.com/t5/b-ecostruxure-geo-scada-expert-forum/EcoStruxure%2525E2%252584%...

 

Home/Communities/SCADA & Telemetry Solutions/Geo SCADA Expert Forum/EcoStruxure(TM) Machine Expert - HVAC

 

I have often used Modbus Slave, ModPoll, ModScan etc and all work with EBO.

You could test Machine Expert using EBO (the AS is easily configured to work with Modbus RTU/RS485), but ModSlave should also work fine and may be better for simple testing.

Tags (1)