Configure The Lan Supply; Connect And Configure The Rs-485 Supplies - TDK-Lambda GENESYS Series User Manual

12.2. Configure the LAN Supply

The LAN power supply, at the head of the multi-drop chain, is called the Master supply.
12.2.1. To Set Up the Master Power Supply:
A. Connect the LAN to a computer as described in section 4.
B. Enable the LAN option with it's rear panel switch. See Figure 3.
C. Set the supply into RS-232 mode by setting rear-panel SW1 bit 6 to DOWN.
D. Connect a RS-485 Link cable from the rear J3-OUT jack to the next supply's J3-IN.
E. Switch AC power on the supply.
F. Set the supply's RS-485 address as described below.
12.2.2. To Set the RS-485 Address:
In addition to the supply's IP address, the multi-drop requires setting an RS-485
address. It is viewed on the front panel of the power supply by setting it to local mode
(see section 3.2.1) and pressing and holding the REM/LOC button. The address may
then be changed by turning the voltage encoder.
The default RS-485 address is 6. It may be set to any value from 0 to 30. The
RS-485 address is not related to the IP address. However, it is required that no other
power supply on the multi-drop chain have the same RS-485 address.

12.3. Connect and Configure the RS-485 Supplies

The RS-485 linked power supplies are called the Slave supplies. They may be individually
commanded and queried using the LAN port on the Master supply.
12.3.1. To Verify the Multi-drop is Enabled:
The RS-485 power supplies must be Multi-drop enabled. All newer Genesys power
supplies have multi-drop enabled by default.
A. The power supply product label may have "-MD" in the model description.
B. Or try running the multi-drop chain. Open the LAN web page. On the DC Power
page, click the "Refresh List" control (see section 6.5.1). The addresses of all the
multi-drop enabled RS-485 supplies will be shown in the list
C. Or use the RS-232/485 port with a communication program such as
HyperTerminal to send the "MDAV?" query. if the response is "1", the multi-drop is
enabled in the supply. Refer to the Technical Manual for details on using the RS-
232/485 port
12.3.2. To Set Up an RS-485 Chain:
A. If the supply has the LAN option, disable the option by sliding the LAN enable
switch to DOWN. See section 3.3.1 and Figure 3
B. Set the supply into RS-485 mode by setting rear-panel SW1 bit 6 to UP
C. Connect the RS-485 Link Cables from the master's J3-OUT to the slave's J3-IN
D. Power-up the supplies
E. Set the supply's RS-485 address as described in section 12.2.2
F. While you are setting the address, it is required to also set the BAUD rate to
19.2K by turning the current encoder
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