NI 2815 Multicard Topologies

The following table lists possible topologies for an NI 2815 NI SwitchBlock device. Refer to Initializing with Topology for NI SwitchBlock Devices for information about using the Configured Topology and NISWITCH_TOPOLOGY_CONFIGURED_TOPOLOGY software names.
Note   You must connect pin 96 (INTERLOCK ENABLE) to pin 48 (GND) with a 500 Ω resistor (500 Ω ±20%, 1/10 W minimum) to allow connection to the analog bus. Refer to the NI SwitchBlock Safety Interlock topic for additional information about this safety feature.
Number ofNI 2815 Cards Topology Software Name Immediate Scanning
1 1-Wire 4×86 Matrix Configured Topology(NISWITCH_TOPOLOGY_CONFIGURED_TOPOLOGY) 1378
2 1-Wire 4×172 Matrix Configured Topology(NISWITCH_TOPOLOGY_CONFIGURED_TOPOLOGY) 1378
3 1-Wire 4×258 Matrix Configured Topology(NISWITCH_TOPOLOGY_CONFIGURED_TOPOLOGY) 1378
4 1-Wire 4×344 Matrix Configured Topology(NISWITCH_TOPOLOGY_CONFIGURED_TOPOLOGY) 1378
5 1-Wire 4×430 Matrix Configured Topology(NISWITCH_TOPOLOGY_CONFIGURED_TOPOLOGY) 1378
6 1-Wire 4×516 Matrix Configured Topology(NISWITCH_TOPOLOGY_CONFIGURED_TOPOLOGY) 1378

Refer to the NI SwitchBlock Device Reference for information about creating multicard devices.