Xantrex Technology XDC - Manual (Page 115)

Remote Operation
Multichannel Operation (6000 Watt only)
Release 3.0 113
Multichannel Operation (6000 Watt only)
Multichannel
Connections
Multichannel operation is only available for 6000 Watt units. You may remotely
control up to 50 power supplies from one programming interface (RS-232 or GPIB)
by using multichannel addressing if the CANbus option is installed.
One power supply will be connected to a PC via RS-232 or GPIB. All other power
supplies are connected via CANbus (Controller Area Network) to that unit. SCPI
commands that include a channel address will be sent via the CANbus to the other
power supplies. (Commands with the local address will be executed locally and will
not be sent).
The multichannel address must be appended to the program mnemonic. If no
multichannel address is appended to the program mnemonic, the command is
executed by the local (directly connected) power supply.
Each unit of the network can send and receive commands to and from other units on
the network. It is highly recommended that only one command be sent at a time. Any
RS-232 and GPIB timeout settings should be increased when using multichannel
commands.
CANbus
The CANbus port is a one male, one female DB9 connector to support “daisy chain”
connections. The CAN (Controller Area Network) is an ISO standard (ISO11898)
for a serial communication network. Table 4.5 describes the pin functions. Pins 1, 4,
8, and 9 are not used. The CANbus is used for communications in multichannel
operation or current sharing (master/slave) operation, and is part of the optional
GPIB/CANbus interface card.
Table 4.5 CANbus Pins
Pin # Function
1 Not used
2 CANLO
3 Ground
4 Not used
5 Ground
6 Ground
7 CANHI
8 Not used
9 Not used