b One slot for a data storage memory expansion card
Built-in communication ports
Quantum CPUs incorporate, depending on the model:
b Two RS 232 Modbus ports (1 RS 232/485 Modbus port for 140CPU6pppp CPUs)
b One Modbus Plus port
b One TCP/IP 10BASE-T/100BASE-TX Ethernet TCP/IP port (100BASE-FX for
140CPU67p6p Hot Standby CPUs)
b One USB port for connecting a programming PC terminal for the CPUs
LCD display
Depending on the model, the CPUs have an LCD display (2 lines of 16 characters)
with adjustable brightness and contrast controls. The keypad associated with the
display can be used for diagnostics, access to certain configuration parameters and
starting and stopping the CPU.
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