I have a customer with network layout containing DH+ and Ethernet, connected with a 1756-DHRIO module. The network contains several SLCs, Compact & Control Logix PLCs, PV Standards, and PV+ HMIs.
They are SLOWLY upgrading all PLCs and HMIs to Ethernet (CLX & PV+), so there will be the need to have the existing DH+ be able to communicated with the new Ethernet, until they are all upgraded.
There are currently several SLC 5/04s that MSG back and forth through the existing 1756-DHRIO module to a CompactLogix and other devices on the Ethernet network, and well as to other 5/04s on the DH+ network.
There are also several PV550 on the DH+ network, which currently communicate with the 5/04s. Only one of thoses 5/04s is currently being upgraded to a CLX, and two (2) PV550s are currently being upgraded to PV+7. So the new PV+7s need to be able to communicate with the same 5/04s they did before, as well as the new CLX.
The question is: Should the existing DHRIO module be used to allow the new PV+7s to still be able to communicate with the 5/04s and also the new CLX, or should a new DHRIO module be purchased to relieve high-traffic issues.
I have never worked with a DHRIO module before, but the RSWho configuration shows that there are 16 devices on the DHRIO CHA, so it would seem that it is handling a lot of connections already.
A rockwell tech mentioned that they've seen multiple DHRIO modules in the same chassis, but not on the same network. I have not been able to find any documentation that details that.
I am looking for unforeseen issues, best practices and capabilities/limitations of using the DHRIO module to allow the PV+7s to communication with DH+ and Ethernet.
PV+6s were looked at because they apparently have a DH+ adapter that can be purchased in addition, however, PV+6s are being phased out in the new future, are a much higher cost than the PV+7s, and the customer would prefer to have the most current, or longest future-supported devices installed. However, PV+7s do not have the DH+ adapter option, so that's why the DHRIO is being looked at as an option.
Any feedback is greatly appreciated!
They are SLOWLY upgrading all PLCs and HMIs to Ethernet (CLX & PV+), so there will be the need to have the existing DH+ be able to communicated with the new Ethernet, until they are all upgraded.
There are currently several SLC 5/04s that MSG back and forth through the existing 1756-DHRIO module to a CompactLogix and other devices on the Ethernet network, and well as to other 5/04s on the DH+ network.
There are also several PV550 on the DH+ network, which currently communicate with the 5/04s. Only one of thoses 5/04s is currently being upgraded to a CLX, and two (2) PV550s are currently being upgraded to PV+7. So the new PV+7s need to be able to communicate with the same 5/04s they did before, as well as the new CLX.
The question is: Should the existing DHRIO module be used to allow the new PV+7s to still be able to communicate with the 5/04s and also the new CLX, or should a new DHRIO module be purchased to relieve high-traffic issues.
I have never worked with a DHRIO module before, but the RSWho configuration shows that there are 16 devices on the DHRIO CHA, so it would seem that it is handling a lot of connections already.
A rockwell tech mentioned that they've seen multiple DHRIO modules in the same chassis, but not on the same network. I have not been able to find any documentation that details that.
I am looking for unforeseen issues, best practices and capabilities/limitations of using the DHRIO module to allow the PV+7s to communication with DH+ and Ethernet.
PV+6s were looked at because they apparently have a DH+ adapter that can be purchased in addition, however, PV+6s are being phased out in the new future, are a much higher cost than the PV+7s, and the customer would prefer to have the most current, or longest future-supported devices installed. However, PV+7s do not have the DH+ adapter option, so that's why the DHRIO is being looked at as an option.
Any feedback is greatly appreciated!