Allen-Bradley PLC-2 via Data Highway

Plant SCADA can use the ABTCP driver to communicate with Allen-Bradley (AB) PLCs over Data Highway Plus via KT, KTX, KTXD, PKTX, 5136-SD and 5136-SD-PCI cards. Using this method, you can connect to single PLCs or to multiple PLCs as in the following diagram:

This arrangement does not use TCP/IP, even though the ABTCP driver is being used. This method does not support DH-485.