GEMTEQ I/O 3. GEM80 GEMCAN NETWORK
3.3.2 Standard
Master
GEMC AN I/O Scan n er
Mo d u le 1
GEMC AN I/O Scan n er
Mo d u le 2
GEM80-500
Master
Po rt A
Po rt B
Po rt C
Po rt D
I/O
Module
a
b
I/O
Module
a
b
I/O
Module
a
b
I/O
Module
a
b
I/O
Module
a
b
I/O
Module
a
b
T
T
T
T
T : Termination Resistor
Figure 3-5
GEMCAN I/O Scanner – Master Operation
When configured as a Master, a GEMCAN I/O Scanner Port is capable of exchanging up to
16 words (4 PDOs) of Input Data and 16 words (4 PDOs) of Output Data with each Slave
device. A maximum of 125 Slave devices may be connected to a single GEMCAN I/O
Scanner module. If for example Port A is communicating with Slaves 1 to 25, then Port B can
only communicate with Slaves 26 to 125.
The Master periodically sends Node Guard messages to each node, to check for their
presence on the CAN network and that they are in an operational state.
GEMTEQ I/O Technical Manual (T2031En)
Rev.02 (10/10)
Page 3-5
Summary of Contents for GEMTEQ I/O GEM80
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