adccommunitymod (AutomationDirect) asked a question.
Created Date: June 20,2013
Created By: NLC
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Redundancy for Productivity PAC. I have used GE in the past and it works great, but they are so ridiculously expensive that I don’t want to use them anymore, but they already have modules for redundant switching via fiber optic and they work very well. The Productivity does not offer the hardware for this, but I was wondering if anybody ever used a pair of Ethernet modules in a way that the standby PLC always new what the status of the on-line PLC was, so that in the event of a hardware failure occurred with the online PLC, the standby PLC would take control. The other networking issue that I have is I would like to replace the GE 90/30's in my facility with about 30 Productivity PLC's that are all networked to the "Online/Standby " PLC. GE offers a CPU with a built in Ethernet port that utilizes Global data sharing which makes networking the PLC's very simple, almost no development time, and transfers data in a way that it does not congest the network. I only want to read one 16bit word from each PLC for alarm monitoring. I know AD uses Peer-Peer but I 've never tried to do it on this level.
Created Date: June 20,2013
Created by: NLC
Redundancy for Productivity PAC. I have used GE in the past and it works great, but they are so ridiculously expensive that I don’t want to use them anymore, but they already have modules for redundant switching via fiber optic and they work very well.
The Productivity does not offer the hardware for this, but I was wondering if anybody ever used a pair of Ethernet modules in a way that the standby PLC always new what the status of the on-line PLC was, so that in the event of a hardware failure occurred with the online PLC, the standby PLC would take control.
The other networking issue that I have is I would like to replace the GE 90/30's in my facility with about 30 Productivity PLC's that are all networked to the "Online/Standby " PLC. GE offers a CPU with a built in Ethernet port that utilizes
Global data sharing which makes networking the PLC's very simple, almost no development time, and transfers data in a way that it does not congest the network. I only want to read one 16bit word from each PLC for alarm monitoring. I know AD uses Peer-Peer but I 've never tried to do it on this level.