david.l.ward
Member
Hi All,
Fairly new to PLCs and in particular communications between processors. I'll explain the problem best as I can.
I have a new water treatment plant onsite with a 1769-L36ERM CompactLogix 5370 controller (Rev 30.014). The controller is connected to a Stratix switch along with the remote IO and VSDs. The control system is basically air gapped from the rest of the plant and uses IP addresses in the range of 10.30.53.X. The PLC program opens in Studio 5000 Logix Designer.
There is an existing water treatment plant onsite with a 1756-L62 ControlLogix5562 controller (Rev 16.7). The controller is connected to an existing Ethernet network for inter-PLC communications with IP addresses in the range of 192.168.11.X. In rack 1 of this controller is the ethernet module for connecting to the 192.168.11.X network (1756-ENBT/A) and I/O cards. There are no free slots in this rack. The remaining racks (2-5) are connected via ControlNet.
Basically I need to be able to communicate between the L36 and L62 controllers for exchanging a few key values (tanks levels, flows, etc).
The original intent was that the new L36 would be connected (from the Stratix) to the 192.168.11.x network switch, however the plant vendor did not know how to configure the Stratix for multiple networks and did not want to re-address all of their 10.30.53.x modules. Instead we decided to join the L62 into the 10.30.53.x network.
I have installed an ethernet module (1756-EN2T) in rack 4 (ControlNet) of the L62 panel and assigned an IP address in the 10.30.53.x range. I downloaded the program and the ethernet module is running without any faults. That ethernet module is connected to the Stratix switch at the new plant.
I am now attempting to add the L36 as a new module under the ethernet card, however in the "Select Module" dialogue box under the expanded list for "Communications" I cannot find 1769-L36ERM. It does list a 1769-L35E, however that is greyed out.
I'm wondering if I need to add the Stratix switch first? Or could this be a firmware issue? Or could this be because I've placed the ethernet module in a ControlNet rack instead of rack 1.
Any help would be greatly appreciated.
Fairly new to PLCs and in particular communications between processors. I'll explain the problem best as I can.
I have a new water treatment plant onsite with a 1769-L36ERM CompactLogix 5370 controller (Rev 30.014). The controller is connected to a Stratix switch along with the remote IO and VSDs. The control system is basically air gapped from the rest of the plant and uses IP addresses in the range of 10.30.53.X. The PLC program opens in Studio 5000 Logix Designer.
There is an existing water treatment plant onsite with a 1756-L62 ControlLogix5562 controller (Rev 16.7). The controller is connected to an existing Ethernet network for inter-PLC communications with IP addresses in the range of 192.168.11.X. In rack 1 of this controller is the ethernet module for connecting to the 192.168.11.X network (1756-ENBT/A) and I/O cards. There are no free slots in this rack. The remaining racks (2-5) are connected via ControlNet.
Basically I need to be able to communicate between the L36 and L62 controllers for exchanging a few key values (tanks levels, flows, etc).
The original intent was that the new L36 would be connected (from the Stratix) to the 192.168.11.x network switch, however the plant vendor did not know how to configure the Stratix for multiple networks and did not want to re-address all of their 10.30.53.x modules. Instead we decided to join the L62 into the 10.30.53.x network.
I have installed an ethernet module (1756-EN2T) in rack 4 (ControlNet) of the L62 panel and assigned an IP address in the 10.30.53.x range. I downloaded the program and the ethernet module is running without any faults. That ethernet module is connected to the Stratix switch at the new plant.
I am now attempting to add the L36 as a new module under the ethernet card, however in the "Select Module" dialogue box under the expanded list for "Communications" I cannot find 1769-L36ERM. It does list a 1769-L35E, however that is greyed out.
I'm wondering if I need to add the Stratix switch first? Or could this be a firmware issue? Or could this be because I've placed the ethernet module in a ControlNet rack instead of rack 1.
Any help would be greatly appreciated.