104
5. PARAMETERS
5.7 (N) Communication operation parameters
• Combination of a computer and multiple converter units (1:n)
RS-485 terminal wiring method
• Wiring between a computer and a converter unit for RS-485 communications
• Wiring between a computer and multiple converter units for RS-485 communication
*1
Make connection in accordance with the Instruction Manual of the computer to be used with.
Fully check the terminal numbers of the computer since they vary with the model.
*2
On the converter unit most remotely connected with the computer, set the terminating resistor switch in the ON (100
Ω
) position.
Computer
Twisted pair cable
Twisted pair cable
RS-485
interface terminals
Converter
unit
Converter
unit
Converter
unit
Converter
unit
Converter
unit
Converter
unit
RS-485
terminals
∗
RS-485
terminals
∗
RS-485
terminals
∗
Station 0
Station 1
Station n
∗
Set only the terminating resistor switch of the
remotest converter unit to the "100
Ω
" position.
∗
Set only the terminating resistor switch of the
remotest converter unit to the "100
Ω
" position.
Computer
RS-232C
converter
RS-232C
cable
Maximum
15 m
Converter
Station 0
Station 1
Station n
RS-485
terminals
∗
RS-485
terminals
∗
RS-485
terminals
∗
∗1
Computer
RDA
RDB
SDA
SDB
RSA
SG
RSB
CSA
CSB
FG
SG
∗2
-
+
-
+
SDB1
SDA1
RDB1
RDA1
∗1
Computer
RDA
RDB
SDA
SDB
RSA
SG
RSB
CSA
CSB
FG
Station 0
SG
SG
-
+ -
+
-
+ -
+
Station 1
SG
SG
-
+
+
-
-
+
+
-
Station n
SG
∗2
-
+
SDB1
SDA1
RDB1
RDA1
RDA2
RDB2
SDA2
SDB2
SDB1
SDA1
RDB1
RDA1
SDB1
SDA1
RDB1
RDA1
RDA2
RDB2
SDA2
SDB2
-
+
Содержание FR-CC2-N Series
Страница 61: ...60 3 PRECAUTIONS FOR USE OF THE CONVERTER UNIT 3 4 Checklist before starting operation MEMO ...
Страница 137: ...136 5 PARAMETERS 5 10 Checking parameters changed from their initial values initial value change list MEMO ...
Страница 153: ...152 6 PROTECTIVE FUNCTIONS 6 6 Check first when you have a trouble MEMO ...
Страница 165: ...164 7 PRECAUTIONS FOR MAINTENANCE AND INSPECTION 7 2 Measurement of main circuit voltages currents and powers MEMO ...
Страница 171: ...170 8 SPECIFICATIONS 8 3 Outline dimension drawings MEMO ...