My company will be installing a new industrial control panel at a municipal water treatment plant. The panel will have several components (PLC, HMI, VFDs, etc.) connected via Ethernet. The panel will also contain a fully managed Ethernet switch with DHCP and VLAN capabilities (http://www.n-tron.com/products_detail.php?product=44&series=5).
For obvious reasons, the folks at the plant do not want the devices in this panel to take 5+ IP address from available pool, so they've asked that this panel be configured as a subnet. For example, if the primary network uses IP addresses 192.168.1.x, the devices in this panel should be addressed 192.168.2.X, and should be accessible to 192.168.1.X devices.
The primary reason for this is to increase the number of available IP addresses on the network and to keep Ethernet/IP control instruments (VFDs, meters) somewhat separate from the more intelligent TCP/IP devices in the system (PLCs and SCADA). What is the easiest way to add these additional IPs (subnet?) to the system without having to reconfigure every other device already on the network?
Some of the abbreviations I've uses may not be familiar to folks who aren't involved in industrial automation, so here is an explanation:
PLC: Programmable logic controller. Basically an industrial computer.
HMI: Human-Machine Interface. The monitor and keyboard/touchscreen that allows operators to monitor and control the system
VFD: Variable Frequency Drive. Used to vary the speed of 3-phase AC motors.
Ethernet/IP: Ethernet Industrial Protocol. A communication protocol for industrial devices that allows communication over a standard TCP/IP Ethernet network.
SCADA: Supervisory Control and Data Acquisition. The top level control and data collection system that ties together the various sub-systems in a plant. Usually server based software by companies like GE or Siemens.
For obvious reasons, the folks at the plant do not want the devices in this panel to take 5+ IP address from available pool, so they've asked that this panel be configured as a subnet. For example, if the primary network uses IP addresses 192.168.1.x, the devices in this panel should be addressed 192.168.2.X, and should be accessible to 192.168.1.X devices.
The primary reason for this is to increase the number of available IP addresses on the network and to keep Ethernet/IP control instruments (VFDs, meters) somewhat separate from the more intelligent TCP/IP devices in the system (PLCs and SCADA). What is the easiest way to add these additional IPs (subnet?) to the system without having to reconfigure every other device already on the network?
Some of the abbreviations I've uses may not be familiar to folks who aren't involved in industrial automation, so here is an explanation:
PLC: Programmable logic controller. Basically an industrial computer.
HMI: Human-Machine Interface. The monitor and keyboard/touchscreen that allows operators to monitor and control the system
VFD: Variable Frequency Drive. Used to vary the speed of 3-phase AC motors.
Ethernet/IP: Ethernet Industrial Protocol. A communication protocol for industrial devices that allows communication over a standard TCP/IP Ethernet network.
SCADA: Supervisory Control and Data Acquisition. The top level control and data collection system that ties together the various sub-systems in a plant. Usually server based software by companies like GE or Siemens.