4 SETTINGS AND PROCEDURES PRIOR TO OPERATION
4.4.1 Connecting the
The following shows the connection precautions and connection examples when using the Q series C24
(1)Connection precautions
(a)For further information about the following items, see the explanation in the applicable section in the User's Manual (Application).
•Controlling the communication on the Q series C24 side by the external device side using the CD signal of the
This is affected by the
•Performing
•Using modem functions.
(b)The connection cable FG signal and shield are connected as follows.
| Connection on the Q series C24 side | Notes | |
Connection cable FG signal | Connect to the Q series C24 connector | Do not short the communication cable FG | |
signal and the SG signal. | |||
| housing | ||
| When the FG signal and the SG signal are | ||
| Connect to the external device FG terminal | ||
Connection cable shield | connected inside the external device, do not | ||
or the Q series C24 connector housing | |||
connect the FG signal to the Q series C24. | |||
| |||
|
|
(c)When normal data communication is not obtained due to external noise, perform the wiring as follows:
1)Connect the FG terminals on the external device and the Q series C24 using the shield of the connection cable.
2)Signals other than SG should be connected with SG signals in the twisted pair.
Q series C24 | Shield | (External device) |
To Connector |
| FG |
|
| |
housing |
|
|
SD |
| RD |
RD |
| SD |
DSR |
| DTR |
DTR |
| DSR |
SG |
| SG |
POINT
When using an
Q series C24, use a converter that is compatible with the external device and PLC
CPU system configuration (1:1).
4 - 6 | 4 - 6 |