LG GLOFA-GM Series User Manual page 325

Chapter 10 Installation and Testing operation
10.1.1 Mounting and installation
[Figure 10.1] shows an example case that max. 4 Cnet I/F modules are mounted on GM4 CPU. As shown in the
figure, Cnet I/F module can be mounted on basic base only as nearest as possible to CPU for reliable
communication. As for GMR dual-CPU, however, single-extended base is mountable on.
[Figure 10.1] Mounting on GM4 CPU
POWER
CPU
Installation sequence is as follows.
1) Prepare basic system configuration required for system configuration
2) Prior to installation work of this communication module, let PLC kept as powered off.
3) Check for any foreign substance on the base connector where module is to be mounted on prior to
installation of the communication module and verify if any connector pin of this module is bent or damaged.
4) Communication module except for dual CPU cannot be mounted on extended base, but surely be mounted
on basic base at the slot positioned nearest to CPU.
5) Max. number of units mountable per CPU is 8, which shall be mounted as specified in [Table 10.1].
6) With communication cable not connected, insert the protuberant at bottom of the module correctly into the
groove of the base board and then apply force enough until the upper is engaged completely in locking
device of the base board. If the locking device is not tightly engaged in, error may occur to interfacing with
CPU.
7) Set operation mode as desired through the switch in front of communication module. Refer to general
specification for operation mode.
8) Tighten up the connection cable of electric module with cable connecting screw until connected firmly.
9) After communication cable is connected, supply power and check LED operation status if normal or not. If
normal, download and execute frame and program through frame definition and GMWIN. (User defined
mode)
Cnet
Cnet Cnet Cnet
G4L-CUEA G4L-CUEA G4L-CUEA G4L-CUEA
RS-232 RS-422 RS-232 RS-422 RS-232 RS-422 RS-232 RS-422
DISPLA DISPLA DISPLA DISPLA
Y Y Y Y
MOD MOD MOD MOD
E E E E
RS-232 RS-232 RS-232 RS-232
C C C C
RS-42 RS-42 RS-42 RS-42
2 2 2 2
RD RD RD RD
A A A A
RD RD RD RD
B B B B
SD SD SD SD
A A A A
SD SD SD SD
B B B B
S S S S
G G G G
F F F F
G G G G
G4Q-RY4A G4Q-RY4A G4Q-RY4A G4Q-RY4A
10-2