The 6ES7138-4DF01-0AB0 is a SIMATIC DP electronics module for ET 200S. It features a 1 SI serial interface, supporting RS232/422/485 ASCII and 3964R protocols. The module has a 15 mm width and operates at 24V DC with reverse polarity protection

Supply Voltage: 24V DC (with reverse polarity protection)

Input Current: 120 mA (from supply voltage L+), 10 mA (from backplane bus 3.3V DC)

Power Loss: 1.2 W (typical)

Memory: Standard blocks (S_SEND, S_RCV, S_XON, S_RTS, S_V24, S_VSTAT, S_VSET)

Interfaces: 1 SI serial interface (RS232/422/485)

Supported Protocols: ASCII, 3964R