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5-6 6. UG-Link
6. UG-Link
• “UG-Link” is the network where the computer reads from and writes to the internal memory of the
UG230, memory card, PLC memory or temperature control/PLC2 memory using a dedicated
protocol.
• Use MJ1 of the UG230 for connection with a general-purpose computer. Use MJ2 for
communications with the PLC.
When the option unit UG230A-DCL is installed, it is possible to use CN1 for communications with
the PLC, MJ2 for connection to the PLC using the temperature controller or PLC2Way, and MJ2 for
communications with a computer. Data of the PLC or temperature controller can be collected
through communications with the UG230. Data collection is available even between the products
of different manufacturers.
• Either signal level RS-232C or RS-485 can be selected.
With RS-232C, one UG230 unit can be connected; with RS-485, a maximum of 31 UG230 units
can be connected.
<RS-485 connection>
• For more information, refer to the User’s Manual <PLC Connection> (FEH380).
RESET
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RUN
STOP
PLCPC
UG230
Dedicated commands
Read
Write
PLC
RS-232C
RS-422
RS-485
PLC
PLC
RS-485
RS-232C
RS-422
RS-485
MJ2
MJ2
CN1
MJ1
MJ1
MJ1 MJ2
RESET
disc
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RUN
STOP
Temperature controller,
inverter or PLC
Local port
1
Local port
2
Local port
31
* [UG230 + UG230A-DCL]
*