Vic

[Vic]

I have a unistream US5-B10-TA30 plc......... ihave setup MODBUS  TCP connection to v570 plc using port 502------ but as this plc will be used as a replacement upgrade i need to use UDP --- i have set up as best i can but can not  connect --- ? are there examples or help to set -------up vic

[dierkens]

I don’t understand the ‘use of replacement’ and the need for UDP in regards to MODBUS.  
 

Can you outline this please.  

[Flex727]

My guess is that Vic's V570 is set up to communicate via MODBUS over UDP and he doesn't want to (or can't) modify the V570 program to change the socket protocol. Therefore he needs the UniStream PLC to communicate with the V570 using UDP.

[Vic]

Hi I have V570 PLC [ET1]Master and [ET1]21 Slaves [10xV570-11 V280] as the ET1 cards are no more available.  If I upgrade my V570 PLC Master to Unistream  (unistream communicates with ET1 and ET2 cards) then  slave replacement  of ET1 I can use ET2 card [ ET1 cards don't communicate with ET2] hence the unistream master which communicates with ET1 or ET2  . As I am using  UDP in Master V570 -then replacement  to unistream I will not have to re-program slaves. Kind regards Vic

[Vic]

 UNISTREAM UDP ----JOE TAUSER MVP2021 [Posted 3 February]------- seem to be in the same place as me when he answer someone question in regards to  UDP- Socket  selection  But also could not find any documents in help on how to move the data kind regards vic

[Vic]

I have no problem replacing the Present Master V570 with any range of Unitronic plc that can [a] communicate UDP --[b]-communicate to ET1 or ET2 card