marius
Member
- Join Date
- Apr 2005
- Posts
- 239
well... i'm trying to become wise about how 'Telemechanique LA9P307 PROFIBUS->MODBUS Gateway' works ... i would like to connect S7 CPU units with 15 modbus frequency converters
(to read errors and set some parameters)
(to read errors and set some parameters)
i just know about LA9P309:
- support exactly 15 modbus devices
- it is configured using some kind of windows software
- it will generate some .GSD info file (which is according to manual usable with some PL7 sofware i have no experience)
- i may need the switches on modbus side as well (each switch support maximum of 8 modbus device)
so i guess... that i will:
- configure my i/o side on MODBUS
- configure my i/o side on PROFIBUS DP
- save this config into gateway
- import gateway .GSD into step7 project as some kind of i/o device
- and now just by reading/writing channels
on profibus side the gateway will take care about channels
translation into modbus protocol and vice versa
?
... i have also find very few threads with similar content but other hw, so... did anybody of you successfully connected S7 on profibus with modbus device?
thanks for any (in)practical replies
(i've spent some time with schneider's technical consultants but the problem is, they do theory, no real work so often and not with s7 of course )