National Instruments RMX-410 Series, User Manual

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80
NATIONAL
INSTRUMENTS
Fig.7-6: Multi power supplies RS232/485 connection
7.5 Rear Panel USB Connector
A standard USB Series B device connector is located on Rear panel for USB control. Refer to Fig.7-5
and Table 7-2.
Fig.7-5: USB Connector
7.5.1 USB Getting Started
POWER SUPPLY
#1
POWER SUPPLY
#2
POWER SUPPLY
#3
POWER SUPPLY
#31
RS485 RS485 RS485 LAN /USB
IN IN IN
IN
OUT OUT OUT
OUT
POWER SUPPLY
#1
POWER SUPPLY
#2
POWER SUPPLY
#3
POWER SUPPLY
#31
RS485 RS485 RS485 RS232/485
IN IN
IN
IN
OUT OUT
OUT
OUT
Fig.7-7: Multi power supplies LAN/USB connection
1 2
3 4
Pin Designator Description
1 VBUS +5 VDC
2 D- Data -
3 D+ Data +
4 GND Interface com
Table 7-2: USB connector pin out
The following steps will help you quickly get started connecting your USB-enabled instrument to
the Universal Serial Bus (USB):
1.
Verify AC switch is OFF.
2. Connect RMX-410x to the USB port on the computer.
3. Turn AC switch ON.
4. Download and install the RMX-410x drivers from ni.com/downloads.
NOTE:
* Do not connect or disconnect the USB cable when the PS is operating.
* In case of USB Communication loss following steps should be applied:
1. Turn AC switch OFF 2. Close RMX-410x COM port
3. Turn AC switch ON 4. Open RMX-410x COM port
7.6 Multi Power Supply Connection to RS232, RS485, LAN, or USB
A Daisy-chain configuration of up to 31 units can be connected to RS232, RS485, LAN, or USB . The
first unit connects to the controller via RS232, RS485, LAN, or USB and other units are connected
with a RS485 bus. The user must set all slave power supplies to a unique address. No two power
supplies may have the same address.
1. First unit connection: Select communication Interface. Refer to section 7.2.3.
2. Other unit connections: The other units on the bus are connected via their RS485 interface.
Refer to Figures 7-6 and 7-7 for typical connections.
3. Using the Linking cable supplied with each unit (Refer to Fig.7-8), connect each unit OUT
connector to the next unit IN connector.
USB Cable (*)
connect to
USB port