Devicenet scanner setup questions 1/8/19


#1

@Frederick_Nelson
Hi Fred,

You can respond to me here if you have any follow up questions.

Deryck


#3

Hello Deryck,

I was able to install the appropriate eds files and apply 24vdc for the DeviceNet loop voltage. I am not scanning all my devices.

Can you point me towards some documents on setting up a modbus server. I want to map the values i am reading from my devicenet slaves to a modbus master for my SCADA to read from.

I am using AB7630-F.

Thanks,
Fred


#4

Hi Fred,

Here are direct links to the manual we discussed on the phone.
The modbus mapping can be found in section 5 of the Ethernet addendum. https://www.anybus.com/docs/librariesprovider7/default-document-library/manuals-design-guides/hms-hmsi-27-251.pdf?sfvrsn=1c7aaad6_28

The following app note covers configuring the device net scanner and mapping it to the memory buffer.

Regards,
Deryck


#6

Thanks Deryck. It looks like i can only define 512 input registers on the Modbus server. I have 23 devicenet slaves and all together i am reading 1548 bytes. I want to assign the addresses to input registers 30000 to 30491.

This device only does 512 bytes. Can i define more bytes to host all my tags in the attached spreadsheet?
5835_Condition Monitoring_IO List_20190114_v1.xlsx (70.0 KB)


#7

Hello @Frederick_Nelson,

The gateway is limited to 512 bytes in both directions. This is a hardware limitation and we can not expand this restriction.

https://www.anybus.com/products/gateway-index/anybus-xgateway/detail/anybus-x-gateway-devicenet-scanner---modbus-tcp-server


#8

Hello Deryck, is this 512 bytes per slave device or my entire DeviceNet ring?


#9

512 is the limit that the gateway can exchange in each direction.

Max. 512 bytes of Input and 512 bytes of Output data