Mitsubishi Electric FX2N-485-BD, User Manual

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1.
INTRODUCTION
The communication board FX
2N
-485-BD for RS485 (hereinafter referred to as “485BD”) can be connected to the base unit of
the FX
2N
Series PC to be used for the following applications.
(1) Data transfer using the no protocol
Data communication with diversified RS232C units including personal computers, bar code readers and printers can
be performed via the RS485 (422) converter using the no protocol. In this application, data is sent or received using
the data registers specified by the RS instruction because the 485BD does not have a buffer memory. For the setting
and program examples, refer to Chapters 5 and 6. For the RS instruction, refer to the FX Programming Manual.
(2) Data transfer using the dedicated protocol
Data transfer with RS485 (422) units can be performed on the 1:N basis using the dedicated protocol. For the
contents of the dedicated protocol used in this application, refer to the FX-485PC-IF User’s Manual.
(3) Data transfer using the parallel link
Data transfer with an FX
2N
programmable controller can be performed on the 1:1 basis for 100 auxiliary relays and 10
data registers. For the setting and program examples, refer to Chapter 7.
(4) Data transfer using the N:N network
Data transfer with FX
2N
programmable controllers can be performed on the N:N basis. For the setting, the number of
transferred data and program examples, refer to Chapter 8.
1
FX
2N
-485-BD COMMUNICATION BOARD INTRODUCTION
1-1