Mitsubishi MELSEC-Q Series User Manual page 68

2
SYSTEM CONFIGURATION
(3) Hub
(4) RS-232 cable
(5) Connection with display device
(6) Connection with GX Developer
2
- 22 2.4 Applicable Devices
The C Controller module discriminates between 10BASE-T and 100BASE-TX and
between full-duplex and half-duplex communication modes according to the hub.
When connecting to the hub that does not have the auto negotiation function, set the
hub to operate in the half-duplex communication mode.
Use the RS-232-compliant cable which length is 15m or less.
[Recommended cable]
7/0.127 P HRV-SV... Specify the number of pairs in
(For 13 pairs, specify 7/0.127 13P HRV-SV.)
(Oki Electric Cable Company, Limited)
POINT
In RS-232 connection, a communication error may occur due to noise generated
from the devices other than the C Controller system, depending on the installation
environment.
In the environment where cables are susceptible to noise, include the retry
processing in the user program.
As for a display device, the C Controller module can be connected to only the GOT
that supports connection with the QCPU.
Refer to the following manual for the GOT that supports connection with the QCPU.
GOT User's Manual
Connection with the GOT is allowed by only microcomputer connection that uses the
RS-232 interface of the C Controller module. (
(a) Direct connection to C Controller module
GX Developer is not connectable to the C Controller module.
GX Developer
Figure 2.9 Direct connection (not allowed)
.
Section 4.16)
C Controller module