Analog Devices DC2515B Demo Manual page 5

DC2515B SERIAL INTERFACE OPTIONS
Master connected to the last (or top) DC2515B. Additional
DC2515B boards can be daisy-chained between the two
isoSPI masters on the isoSPI bus. Primary (or main) com-
munication begins from the first (or bottom) DC2515B
then to the next upper DC2515B and, finally, to the last (or
top) DC2515B. The backup auxiliary (or aux) communica-
tion begins in the reverse direction to provide coverage
when a possible isoSPI daisy-chain break occurs.
Figure 4 shows the following connections for two boards
on a stack interfaced to a PC:
1. Connect a USB cable from the PC USB port to the
DC2026 J5 connector.
2. Connect the DC2026 to the DC2792B dual master isoSPI
demo board.
a. Connect a 14-pin ribbon cable from the DC2026 J1
header to the DC2792B J1 header.
3. Connect the DC2792B primary (or main) isoSPI master
to the first (or bottom) DC2515B board of the stack.
a. Connect a 2-wire twisted-pair patch cable from the
DC2792B J2 MAIN DuraClik connector to the bottom
DC2515B J4 isoSPI A DuraClik connector.
CAUTION! The 2-wire twisted-pair patch cable with
the DuraClik end plugs have 1mm thick center locking
tabs on the wiring side that must be pressed down to
release from the DuraClik receptacles. Failure to do
Figure 4. DC2792B Redundant isoSPI Connections to the Bottom and Top DC2515B in a Two-Board DC2515B Stack
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DEMO MANUAL DC2515B
so may damage the cable and prevent board-to-board
isoSPI communication.
4. Connect or daisy-chain the DC2515B to another
DC2515B in isoSPI mode. This DC2515B is the last
(or top) board of a two-board stack. More DC2515B
upper boards can be daisy-chained together in the
same manner.
a. Connect a 2-wire twisted-pair patch cable from the
bottom DC2515B J5 isoSPI B DuraClik connector to
the next upper or top DC2515B J4 isoSPI A DuraClik
connector.
5. Connect the DC2792B auxiliary (or aux) isoSPI Master
to the last (or top) DC2515B board of the stack.
a. Connect a 2-wire twisted-pair patch cable from the
DC2792B J3 AUX DuraClik connector to the top
DC2515B J5 isoSPI B DuraClik connector.
6. CAUTION! Prevent damage to the DC2515B. Refer to
Table 1 and confirm that the cell-voltage connections
to the screw-terminal block matches the DC2515B J1
pinout.
a. Plug the screw-terminal blocks into the J1 cell-voltage
connectors.
7. Refer to the Software Setup section of this demo manual
to properly setup the PC with the Arduino IDE software
to allow communication to the DC2515B boards.
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