TB51x-TB54x
- TB511-ARCNET: 1 processor module, 1 communication module, with network interface ARCNET BNC
- TB511-ETH: 1 processor module, 1 communication module, with network interface ETHERNET RJ45
- TB521-ARCNET: 1 processor module, 2 communication modules, with network interface ARCNET BNC
- TB521-ETH: 1 processor module, 2 communication modules, with network interface ETHERNET RJ45
- TB523-2ETH: 1 processor module, 2 communication modules, with 2x network interface ETHERNET RJ45
- TB541-ETH: 1 processor module, 4 communication modules, with network interface ETHERNET RJ45
- XC version for use in extreme ambient conditions available (-ETH versions only)