NF ZM2371 - Connection

5.1 Preparations Before Use
5-8 ZM2371/ZM2372
5.1.3.3 Connection
Prepare commercially available connection cable separately. When connecting to the serial
interface of personal computer, the following cable can be used.
Cable specification: D-Sub, 9 pins, female – female, interlink connection, inch screw.
To avoid radiation of electromagnetic noise or malfunction due to noise,
the shielded cable must be used.
The communication can be made, provided that at least three cables of RxD, TxD, and GND
are connected.
For the hardware handshake, RTS and CTS are required.
To utilize the hardware handshake, use the interlink cable (Figure 5-1 (b)). For cross or
reverse connection, a type in which adjacent pins 7 and 8 are connected (Figure 5-1 (c)) is
possible. With this type, the communication can be made, but it cannot be used for the
hardware handshake.
1 2 3 4 5
Inch screw
（♯4-40）
6 7 8 9
(a) RS-232 connector on rear panel
ZM2371/ZM2372
Personal computer
(PC/AT, etc.)
Signal
name
Pin No.
Pin No.
Signal
name
－
1
1
－
1
1
RxD
2
2
RxD
2
2
TxD
3
3
TxD
3
3
DTR
4
4
DTR
4
4
GND
5
5
GND
5
5
－
6
6
－
6
6
RTS
7
7
RTS
7
7
CTS
8
8
CTS
8
8
－
9
9
－
9
9
Frame
Frame
(b) Interlink connection (c) Other cross connection
Figure 5–1 RS-232 cable connection diagram