[Vision 570 Modbus IP slave and master]

Thankyou for your help Flex727, it now works!!! i am really greatfull,  i had been struggling with tjhis for hours yesterday. Do you know if i should reset the total sessions and acknowledgment counts after a certain time or will it do that it self?

[Vision 570 Modbus IP slave and master]

Hi everyone,

I am having real problems trying to get 2 v570's to talk via modbus ip at the same time as scada system reading from them both. I Currently have a PC scada system reading from the 2 v570's ok but also want one of the v570's to read from the other.

they both have 2 modbus configurations, the slave v570 has 2 scan-ex fb's one for the scada and one for the other v570 and the master v570 has one scan-ex and one read holding register fb,

i am using socket 2 for the scada system and socket 3 for the v570 using ports 502 and 503 respectivly with a socket init for socket 3, i have noticed that sb150 (socket 3 connected ) is 0

If i use some modbus scanning software i can access the slave on both ports so i'm sure the slave is ok but my read holding registers fb shows status of 5 and 0 acks.

I have attached only the modbus part of the software.

i think i must of done something stupid but i have now gone blind from looking at for so long so if anyone could cast an eye i would be very greatfull

Regards

Chris

v570modbusread slave.vlp

v570modbusread.vlp

[Visilogic alarms]

Hi all. I'm currently building an alarm system and it works well with the in built alarm software. but I would like my plc to control other things whilst alarms are going off and for that I would need to "minimise or hide" the alarms is this possible? I'm using a 570. I would also like to say I'm really impressed with the free software and the unitronics hardware. Brilliant for the money.