IS215VCMIH2B (VME Communication Board)
The VCMI board in the control and interface module communicates internally to the I/O boards in its rack, and to the other IS215VCMIH2B cards through the IONet. There are two versions, one with one Ethernet IONet port for simplex systems, and the other with three Ethernet ports for TMR systems. Simplex systems have a single control module connected to one or more interface modules using one cable. The VCMI with three separate IONet ports is used in TMR systems for communication with the three I/O channels Rx, Sx, and Tx, and with the two other control modules.