Mitutoyo 542-071, User'S Manual / Instructions For Use, Page: 50 / 76

5 External Input/Output Function
36
No. 99MBC109B
5.3
RS-232C Communication Function
By connecting to a PC or PLC via RS-232C, you can load measurement data
and manipulate various settings of the Counter through remote operation.
You can also save and load parameters.
5.3.1 Connections
„
Compatible plug and pin assignment
Compatible plug: D-sub 9-pin (female), inch screw type
Cable: A commercial RS-232C cross-type cable
2 RXD IN
3 TXD OUT
4 DTR OUT
5 GND -
6 DSR IN
7 RTS OUT
8 CTS IN
1, 9 NC -
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
Pin number Pin number
Counter side PC side
Pin number Signal name I/O
1 5
6 9
„
Communication specification (conforming to EIA RS-232C)
Item Description
Home position DTE (Data Terminal Equipment), use a cross-type cable.
Communication
method
Half-duplex, non-procedural mode
Data transfer speed 4800 bps/9600 bps/19200 bps
Bit configuration Start bit: 1
Data bits: 7 bits/8 bits (ASCII code, upper-case characters)
Parity: None/Even parity/Odd parity
Stop bit: 2
Tips
• Set communication conditions using parameters.
For details, see "3.3 Advanced Parameters" (page 14).
• Use commercial terminal software for communication with a PC.