GEMTEQ I/O 3. GEM80 GEMCAN NETWORK
3.
GEM80 GEMCAN NETWORK
3.1 INTRODUCTION
A GEMCAN network operates on a Master / Slave principle, with a single Master and multiple
Slaves. Although a second Master may be connected to the network, only one Master is active at
any one time. Typically a GEMCAN network consists of a host GEM80 PLC with a GEMCAN I/O
Scanner module and a number of GEMTEQ I/O modules, all communicating via the GEMCAN
network.
GEMCAN I/O
Scanner
T
T
Po rt A
Po rt B
GEM CAN Ne tw ork
I/O
Module
a
b
I/O
Module
a
b
I/O
Module
a
b
T : Termination Resistor
GEM TEQ I/O M odule s
Figure 3-1
Simple GEMTEQ I/O Network
Further GEMCAN I/O Scanner modules may be attached to the network as a Change-over
Masters or as further Slave devices.
Data exchange between the Master and Slaves utilises Process Data Objects (PDOs) on the
GEMCAN network.
3.2
GEMCAN I/O SCANNER MODULE
Figure 3-2
9720-4020 GEMCAN I/O Scanner Module
GEMTEQ I/O Technical Manual (T2031En)
Rev.02 (10/10)
Page 3-1
Содержание GEMTEQ I/O GEM80
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