Hardware manual

Chapter 2 Connection to a PLC
2-64
2.4.2 MELSEC-A Series: Connection to the Programming Port or 2-port Adapter
Item Setting
Communication Interface RS-422
Data Bits 8 (fixed)
Baud Rate 9600 (fixed)
Parity Odd (fixed)
Stop Bits
Use the same
settings as for
the MICRO/I.
1 (fixed)
When using CPU Direct for the connection, the PLC program scan time will increase when it
starts communicating with the MICRO/I. Investigate this under your actual operating
conditions.
2.4.3 MELSEC-Q/QnA Series: Settings for the Computer Link Unit
Setting
Item
RS-422
Communication protocol MC Protocol (Format 4)
Station Number 0(DEC)
Data Bits 7 or 8
Baud Rate
1200, 2400, 4800, 9600, 19200, 38400, 57600 or 115200
bps
Parity None, Even or Odd
Stop Bits
Use the same
settings as for
the MICRO/I.
1 or 2
Checksum Code Yes
Write During RUN Possible
The PLC settings are performed using the I/O allocation for the GPPW.
Refer to the Q-compatible Serial Communication Unit user manual (Basic) for details.