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Multichannel Operation
TM-XDOP-01XN 4–13
Setup
1. Connect power supplies to be controlled via the CANbus network. Parallel
male DB9 to female DB9 cables (N-1) are required. Connect the power
supplies in series, linking the first power supply to the second using one cable,
and then the second to the third using a second cable and the second CAN
port. A single ribbon cable with multiple connectors may be used instead of
several cables for ease of connection. Terminate the bus at each end with a
120 ohm, 1/4 Watt resistor (included) across the CAN HI and CAN LO
signals (Pins 2 and 7). See Table 4-5, “CANbus Pins” on page 4–11.
2. At least one power supply should be connected to a PC via RS-232 or GPIB
for multichannel functionality. Configure each of the power supplies with a
unique address, as described in the configuration section. Addresses may be
in the range 1 to 50 inclusive.
3. Turn the power supplies on one at a time, setting the remote control source of
each power supply which will accept commands to "multichannel."
See Figure 4-3.
Figure 4-3
Connections for Multichannel Operation
TM-XDOP-01XN.book Page 13 Monday, July 17, 2006 11:19 AM