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C. RS-485 COMMUNICATION CONNECTION DIAGRAM
7300PA provide PA-M (MODBUS protocol) and PA-P (PROFIBUS-DP protocol)
option card for RS-485 communication interface. The wiring diagrams of PA-M and
PA-P are as below.
(a) PA-M MODBUS protocol communication
The PA-M option card supports the MODBUS protocol can be placed at the upper
side of the control board.
Fig. 15 Wiring for PA-M MODBUS Protocol communication
Note
:
1. A Host Controller with RS-485 interface can communicate with the 7300PA unit through PA-M
option card. If the Host Controller does not provide the RS-485 port and its RS-232 port is
available, an RS-485/RS-232 conversion card should be used to connect between this Host
Controller and PA-M option card of 7300PA.
2. A MODBUS Host Controller can drive the network with no more than 31 drivers connected, using
MODBUS communication standard. If the driver (e.g., 7300PA drive) is at the end of the network
it must have the terminating resistors 220
Ω
at both terminals (By SW1 dip Switch). All other
drives in the system should not have terminators.
3. The PA-M card with RS-485 and RS-422 interface can be selected by TP1 jumper.
4. Please refer to “7300PA PA-M RS-485 MODBUS Communication Application Manual".
RS-485
Controller
220
Ω
(Terminator
Resistor)
7300 PA
P
M31
(PA-M)
TB1
S+
S-
shield
○
X
○
X
○
X
SW1
TP1
RS-485
7300 PA
P
M2
(PA-M)
TB1
S+
S-
shield
○
X
○
X
○
X
TP1
RS-485
7300 PA
P
M1
(PA-M)
TB1
S+
S-
shield
○
X
○
X
○
X
TP1
RS-485
+
-
RS-485
interface
RS-232
Controller
Rx
Tx
DATA(+)
DATA(-)
Rx
Tx
or
RS-485
/
RS232
adaptor
RS-232
interface
Summary of Contents for 7300PA series
Page 6: ... 4 PART I INSTALLATION MANUAL ...
Page 35: ... 33 PART II OPERATION MANUAL ...