GE 90-30 PLC Series Installation And Hardware Manual page 182

8
IC693CMM302 Enhanced Genius Communications Module (GCM+)
The Enhanced Genius Communications Module (GCM+), IC693CMM302, is an intelligent module
that provides automatic global data communications between a Series 90-30 PLC and up to 31
other devices on a Genius bus.
The GCM+ can be located in any standard Series 90-30 CPU baseplate, expansion baseplate, or
remote baseplate. However, for most efficient operation, it is recommended that the module be
installed in the CPU baseplate since the sweep impact time of the GCM+ module depends on the
model of PLC and the baseplate where it is located. Note: if a GCM module is present in a
system, GCM+ modules cannot be included in the system.
Multiple GCM+ modules can be installed in a Series 90-30 PLC system with each GCM+ having
its own Genius bus serving up to 31 additional devices on the bus. For example, this allows a
Series 90-30 PLC with three GCM+ modules to exchange global data with as many as 93 other
Genius devices automatically. In addition to basic global data exchange, the GCM+ module can be
used for various applications such as:
The Genius bus connects to the terminal board on front of the GCM+ module.
Figure 8-4. Enhanced Genius Communications Module
8-4 Series 90-30 PLC Installation and Hardware Manual – August 2002
Data monitoring by a personal computer or an industrial computer.
Monitoring data from Genius I/O blocks (although it cannot control Genius I/O blocks).
Peer-to-peer communications among devices on the bus.
Master-slave communications among devices on the bus (emulates remote I/O).
ENHANCED
GENIUS
COMM
OK
COM
GENIUS
COMMUNICATIONS
MODULE
1
2
SER
3
1
4
5
6
7
SER
8
2
9
10
11
12
13 SHD
IN
14
15
16
17
18 SHD
OUT
19
20
44A729182-016R02
FOR USE WITH
IC693CMM301 / 302
GFK-0356Q