38
6-1-6. RS232/485 port in Local mode
When the power supply is in local mode, it can receive queries or commands. If a query is received, the power supply
will reply and remain in Local mode. If a command that affects the output is received, the power supply will perform
the command and change to Remote mode.
Serial commands may be sent to set the status registers and read them while the unit is in Local mode. If the Enable
registers are set the power supply will transmit SRQ’s while in Local.
◆
Refer to
"6-7. Status, error and SRQ registers"
.
6-1-7. Front panel in Remote mode
Front panel control in Remote mode is disabled except for:
1. V/I CHK: use to preview the Voltage and Current limit setting.
2. OVP/UVL: use to preview the OVP/UVL setting.
3. RMT/LCL use to set the unit into Local mode.
In Local Lockout mode, only PREV and OVP/UVL are active.
6-2. RS232/485 connector
The RS232/485 interface is accessible through the rear panel RS232/485 IN and RS485 OUT connectors.
The connectors are 8 contact RJ-45. The IN and OUT connectors are used to connect power supplies in a RS232 or
RS485 chain to a controller.
◆
Refer to Fig.6-1 for IN/OUT connectors
SG
NC
TXD+
RXD+
RXD-
TXD-
NC
NC
8 7 6 5 4 3 2 1
8 7 6 5 4 3 2 1
NC
SG
RXD+
TXD+
TXD-
RXD-
TX
RX
Shield
(connector enclosure)
OUT
IN
Fig.6-1: J3 rear panel IN/OUT connectors pinout
CAUTION
!
Tx and Rx are used for RS232 communication. Txd
±
and Rxd
±
are used for RS485
communication.
◆
Refer to RS232 and RS485 cables description for connection details.
6-3. Connecting power supplies to RS232 or RS485 bus
6-3-1. Single power supply
(1) Select the desired interface RS232 or RS485 using rear panel setup switch SW1-6.
◆
Refer to
.
- RS232: Down position
- RS485: Up position
(2) Connect rear panel IN connector to the controller RS232 or RS485 port using a suitable shielded cable.
◆
Refer to Figures 6-2, 6-3 and 6-4 for available RS232 and RS485 cables.
Summary of Contents for PU100-15
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