AlanSmith
Member
I have 4 machines each with an identicle PLC/HMi layout. Layout as follows...
AB SLC 503 cpu. The 485 port connects to a 1747 AIC.
The AIC then connects to a 1761 NET AIC via 485.
The NET AIC then connects to a PanelView Plus via RS232.
Each of the machines is the same and there is no connection between the machines.
I wish to modify the system so that a single RedLion DSP can collect and log a small amount of data from each plc.
As I see it, I have two options.
1) Connect all the AIC and NET AIC units together into a long Daisy Chain. Give each PLC a different "Address"
Add a new AIC (or NET AIC ?) and connect the DSP to this.
or
2) Connect the DSP to the "Serial" Port on the PLC's
Question for option 1... Will it work or will I get conflicts between the 4 x PanelViews and the RedLion DSP ?
Note, each PV would only need to access its own PLC. The DSP would need to access each PLC.
Question for option 2... Can a DSP be connected to 4 x PLC Serial ports at the same time ?
or... can I buy a DSP with 4 x separate RS232 ports on it.
I would also consider any other connection options instead of the above.
The DSP would "serve" the collected data to a PC via its ethernet port.
Thanks in advance for any advice
Alan
AB SLC 503 cpu. The 485 port connects to a 1747 AIC.
The AIC then connects to a 1761 NET AIC via 485.
The NET AIC then connects to a PanelView Plus via RS232.
Each of the machines is the same and there is no connection between the machines.
I wish to modify the system so that a single RedLion DSP can collect and log a small amount of data from each plc.
As I see it, I have two options.
1) Connect all the AIC and NET AIC units together into a long Daisy Chain. Give each PLC a different "Address"
Add a new AIC (or NET AIC ?) and connect the DSP to this.
or
2) Connect the DSP to the "Serial" Port on the PLC's
Question for option 1... Will it work or will I get conflicts between the 4 x PanelViews and the RedLion DSP ?
Note, each PV would only need to access its own PLC. The DSP would need to access each PLC.
Question for option 2... Can a DSP be connected to 4 x PLC Serial ports at the same time ?
or... can I buy a DSP with 4 x separate RS232 ports on it.
I would also consider any other connection options instead of the above.
The DSP would "serve" the collected data to a PC via its ethernet port.
Thanks in advance for any advice
Alan