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Modnet communication

Tatsuya
Hi all,
If you know the solution please share me.
Citect SCADA 8.20, Using Modnet communication(Modbus TCP)
 Slave machine: Yamato DataweighTm Omega, from Japanese machine vender, 1 unit.
www.yamato-scale.co.jp/.../184
https://youtu.be/pu5Z7Z6K_sM
Q1
There is only one slave IP address and one Ethernet port (502).
However, our SI want to communicate separately with multiple unit identifiers in one slave machine.
In the case of Modbus RTU, they specify each unit number for multiple slaves, but is it possible to divide one port into multiple unit identifiers and communicate with Modnet?
Q2
Can they change maximum Message Length in the Modnet communication?
I serched the manuals and KB but coudn't find the info about it.
Parents

  • Q1: I think it should be no problem to create multiple units at the same address.  Just configure them as different I/O Devices and give them each a unique number.  They will all be associated with a single Port that has the IP Address in its configuration. 

    Q2: Yes. See the "Driver Reference Help" for the MODNET Driver.  There is a link to it from the Topology > I/O Devices page of Citect Studio.   See MODNET Driver > MODNET Parameters and you will see a parameter called MaxBits.  You can either set this universally, or if needed you can set a different value for each I/O Device. 

Reply

  • Q1: I think it should be no problem to create multiple units at the same address.  Just configure them as different I/O Devices and give them each a unique number.  They will all be associated with a single Port that has the IP Address in its configuration. 

    Q2: Yes. See the "Driver Reference Help" for the MODNET Driver.  There is a link to it from the Topology > I/O Devices page of Citect Studio.   See MODNET Driver > MODNET Parameters and you will see a parameter called MaxBits.  You can either set this universally, or if needed you can set a different value for each I/O Device. 

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