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CPU414-4H and ELPRO 905U-E Wireless Ethernet Modem

Created by: Peterman_SP at: 5/29/2008 5:13 PM (1 Replies)

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5/29/2008 5:13 PM	Rate (0)
Peterman_SP Posts: 21 Rating: (0)	Hello experts: I have a problem with my system. I have a redundancy system with CPU 414-4H and ELPRO 905-U radio. I use the radio for receiving data from 7stationsthenI store these data indifferent DB blockin thePLC. Apparently everything is working normally but sometimes data of 2 DB blocks are the same, buton the radio data are different.I cant'n understand this. This copyhappens by 1 or 2 minutes, afterthe system returns tonormal. Thishappens 2 or 3 times a day anytime. I use the modbus TCP protocol to comnicate the PLC and radio. What may be the problem? Attachment Connections.JPG (1004 Downloads)
Peterman_SP Posts: 21 Rating: (0)
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10/7/2008 12:19 PM	Rate (0)
Wüstenräuber Gold Expert Joined: 10/3/2008 Last visit: 1/14/2026 Posts: 996 Rating: (129)	Hello alexgabriel, do you use OpenModbusTCP (FB MODBUS or FB MODB4)? Wüstenräuber

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