TECO A510-2001-H - Appendix

Appendix-1
Appendix
A. Example of RS-485 communication interface wiring
‧ A510 RS-485 port (RJ45) adopts MODBUS protocol to communicate with outside.
If the external PROFIBUS (JN5-CM-PDP) / Devicenet module (JN5-CM-DNET) is
added in, then PROFIBUS-DP/Devicenet communication protocol can be used to
communicate with outside.
‧ System application wiring of MODBUS and PROFIBUS-DP communications, as
following:
a. Wiring example of MODBUS communication protocol
Figure 52 Wiring figure of MODBUS communication protocol
Note: 1. If the host controller has RS-485 interface, it can be connected directly to the RS-485
communication interface of A510. But if the host controller does not have RS-485
interface and only has RS-232 interface (such as PC connection) ， it can be
connected to the RS-485 COM port of A510 through adapter of RS-485/RS-232.
OR
Or PC’s software connection
RS485
Interface
A510
A510
A510
R
es
i
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o
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Controlle
r
of
RS485
Interface
Controlle
r
of
RS232
Interface
RS232
Interface
C
onnec
t
or
Resisto
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