Yaskawa MP930 - Manual (Page 106)

System Startup
4.1.1 MC Unit
4 -4
D The MEMOBUS port connector is a D-sub connector (9-pin, female). Table 4.1 shows the
layout of the connector pins and the signal names.
Table 4.1 MEMOBUS Port Layout and Signal Names
Pin Number Abbreviation Signal Name Appearance
1 FG Protective ground
2 TXD Transmission data
3 RXD Reception data
4 RTS Request to send
5 CTS Clear to send
6 DSR Data set ready
7 GND Signal ground
8 −
9 DTR Data terminal ready
D The following illustration shows an example of the use of the MEMOBUS ports.
An ASCII Device (printer) can be connected to the port.
Port 1
MC Unit I/O Unit
Communications using
commands/instructions
Data output
Programming Device
Monitor information
Communications using
MEMOBUS protocol
Programming information
Serial printer
Port 2
J DIP Switch
D The DIP switch consists of six pins. The pins are numbered 1 to 6, as shown in the diagram
in Table 4.2.
D Each pin is ON when it is moved to the left.
4
A
EXAMPLE
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