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7 cable selection, Cable selection – B&B Electronics I-7565-H2 - Manual User Manual

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Table 2: LED indication of I-7565-H1/H2

LED Name

I-7565-H1/H2 Status

LED Status

Hardware Init Fail

All LED always turned on
permanently after reset

Hardware WDT Fail

All LED flash per 2 second

ALL LED

Contact to ICP DAS

All LED flash take turns

Firmware Updating Mode

Flash per second

Firmware Operation Mode

Always turned on

PWR LED

Power Off

Off

Transmission

Flash

RUN LED

Bus Idle

Off

Transmission Fail

Flash per 100 ms

Buffer Overflow

Flash per second

Bus-Off

Always turned on

ERR LED

No Error

Off


2.7 Cable Selection

The CAN bus is a balanced (differential) 2-wire interface running over

either a Shielded Twisted Pair (STP), Un-shielded Twisted Pair (UTP), or
Ribbon cable. The CAN-L and CAN-H Wire start on one end of the total
CAN network that a terminator of 120 Ohm is connected between CAN-L
and CAN-H. The cable is connected from CAN node to CAN node,
normally without or with short T connections. On the other end of the cable
again a 120

(Ohm) terminator resistor is connected between the CAN

lines. How to decide a cable type, cable length, and terminator depends
on the baud rate in the CAN bus network, please refer to the following
table 3.

Figure 2-14: Un-shielded Twisted Pair (UTP)


I-7565-H1/H2 High Speed USB/CAN Converter User’s Manual (Ver 1.1, Nov/2009) ------------- 15