Rockwell Automation 4100 ALEC AXIS LINK ENCODER CONVERTER - Manual (Page 38)

Publication 4100-5.3 - June 1999
30 Setup
Encoder Fault (Enc. Fault On/Off)
This DIP switch (number 3) enables or disables the encoder fault.
When the switch is in the On position (switch set to left), Encoder
Fault is enabled. This means that when the ALEC detects a loss of
encoder signal, the Encoder OK LED goes off, the CPU OK LED goes
off, and the Fault Relay is opened. If the switch is in the Off position
(switch set to the right), the Encoder fault is disabled. When a loss of
encoder signal is detected, the Encoder OK LED goes off but the CPU
OK LED and the Fault Relay are not affected.
Extended/Standard Length (Extd Length On/Off)
DIP Switch 4 determines whether the AxisLink cable that the ALEC is
connected to can be 410 feet (125 meters) or only 82 feet (25 meters).
AxisLink in standard length mode sets the maximum total length of
the cable at 82 feet (25 meters). When AxisLink is in extended length
mode the ALEC can be connected to an AxisLink cable with a total
maximum length of 410 feet (125 meters). In either mode, the
minimum cable length between any two modules must be at least one
meter.
Extended/Standard Length Termination 1 (Extd Term1 On/Off)
DIP switch 5 sets Termination 1 internal resistor to either extended or
standard mode. In the On position (switch is to the left) extended
length termination is selected. In the Off position (switch is to the
right) standard length termination is set.
Extended/Standard Length Termination 2 (Extd Term2 On/Off)
DIP switch 6 sets whether Termination 2 internal resistor to either
extended length or standard length mode. In the On position (switch
is to the left) extended length termination is selected. In the Off
position (switch is to the right) standard length termination is set.
ATTENTION
!
DIP Switches 4, 5, and 6 must be set to the same position.
They must all either be set to Extended or to Standard.