Yaskawa MP940 - Manual (Page 100)

4.2 Serial Communications Function
4-7
4
In this example, a CP-717 Programming Device is connected to the RS-232C port, and
external devices are connected branching from the RS-485 port.
„ System Configuration with Controllers by Other Manufacturers
In this example, a MELSEC Controller by Mitsubishi Electric is connected to an MP940 in a
serial circuit.
4.2.3 Communications Specifications
The following table shows the MP940 Module communications specifications for the serial
communications function.
Table 4.1 Serial Communications Specifications
MP940
CP-717
RS-232C
RS-485
Notebook computer
External
device
External
device
External
device
External
device
CP-717
MP940
RS-232C
RS-485
MP940
MELSEC
GPP
CPU AJ7
1UC
24
CP-717
RS-232C
MELSEC
MELSEC protocol
Serial
Notebook computer
Item Specifications
Interface RS-232C: 1 circuit
RS-422/485: 1 circuit
Connector RS-232C (port 1): MDR 14-pin, female
RS-422/485 (port 2): MDR 14-pin, female
Transmission Distance RS-232C: 15 m max.
RS-422/485: 300 m max.
Baud rate RS-232C (port 1): 9600, 14400, 19200 bps
RS-422/485 (port 2): 9600, 14400, 19200 bps
Synchronization Method Non-synchronous (Start/stop synchronizing)
Communications Protocol MEMOBUS (Master/Slave), MELSEC communications, no protocol
Connection Format RS-232C: 1:1
RS-422: 1:1
RS-485: 1:N
Communications Format (Can be set.) Data length: 7/8 bits
Stop bits: 1/2 bits (port 1 only)
Always 1 for port 2.
Parity bits: Even, odd, or none