Omron CQM1H - 08-2005 Operation Manual page 124

Programming Devices
One-to-many
Communications
Serial RS-232C cable at
communications the personal
mode computer
Host Link Make your own
cable (See
below.)
Preparing RS-232C Cables
Connecting to
CX-Programmer
The following table shows the connections methods for communications
between one personal computer and many PCs.
RS-232C-to- RS-422A/485 -
RS422A/485 to-RS-232C
Converting Converting Link
Link Adapter Adapter
3G2A9- NT-AL001-E
AL004-E
Prepare the RS-232C cable between the 3G2A9-AL004-E Link Adapter and
the computer as shown below.
IBM PC/AT or compatible
Pin No.
---
RS-232C
interface
(D-sub, 9-pin, female)
The DIP switch settings of the NT-AL001-E Link Adapter are shown below.
When connecting the RS-232C port to the CX-Programmer, set the communi-
cations mode to Host Link mode and connect in the following way.
CQM1H-series CPU Unit
Signal Pin No.
FG 1
SD 2
RD 3
RS-232C
RS 4
interface
CS 5
5V 6
DR 7
ER 8
SG 9
(D-sub, 9-pin, male)
When preparing an RS-232C cable to be connected to the RS-232C port, use
the following connector cables.
Connecting cable
Length
number
0.7 m XW2Z-070T-1
2 m XW2Z-200T-1
3G2A9-AL004-E Link Adapter
Pin No.
Signal
(D-sub, 25-pin, male)
Always ON
Turn ON at end of transmission path and turn OFF
elsewhere.
Turn both pins OFF for 4-wire connection.
Turn OFF pin 5 and turn ON pin 6 for RS-232C
CTS control.
Section 3-6
Port at PC
Model
RS-232C port
(D-Sub, 9-pin,
female)
Signal
RS-232C
interface
IBM PC/AT or compatible
Pin No. Signal
1 CD
2 RD
3 SD
RS-232C
4 ER
interface
5 SG
6 DR
7 RS
8 CS
9 CI
(D-sub, 9-pin, female)
99