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ICP DAS USA I-7242D User Manual Page 12

Devicenet / modbus rtu gateway.
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The CAN bus baud rate has the high relationship with the bus length.
Table 2-2 indicates the corresponding bus length for every kind of baud rate in
DeviceNet network.
Table 2-2 Baud rate and bus length for DeviceNet network
Baud rate (bit/s)
In order to provide an easy CAN bus wiring, the I-7242D supplies one
CAN port with two CAN bus connector interfaces. Each connecter built on the
I-7242D looks like as figure 2-3 and table 2-3.
Pin No.
Signal
1
No used
2
CAN_L
3
CAN_SHLD
4
CAN_H
5
No used
I-7242D DeviceNet/Modbus RTU Gateway User's Manual, July 2006, Version 1.1
500 K
250 K
125 K
Figure 2-3 CAN bus connector of I-7242D
Table 2-3 Connector pins of I-7242D
Max. Bus length (m)
100
250
500
Description
CAN_L bus line (dominant low)
Optional CAN Shield
CAN_H bus line (dominant high)
I-7242D user manual
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