User Manual

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DIP Switch Settings
DIP No. Function ON
OFF
(Default setting)
1
Force Fiber Port Duplex
Half-duplex
Full-duplex
“OFF”: Forces Full-duplex on Fiber port.
“ON”: Forces Half-duplex on Fiber port.
2
Link Fault Pass Through
Disable
Enable
“OFF”: Enables “Link Fault Pass Through”, the link status on
the TX port will inform the FX port of the same device and
vice versa.
“ON”: Disables “Link Fault Pass Through”, the link status on
the TX port will not inform the FX port.
3
Force TP Duplex
Half-duplex
Full-duplex
(Only when Auto Negotiation (DIP 5) is disabled)
“OFF”: Forces Full-duplex on Ethernet port.
“ON”: Forces Half-duplex on Ethernet port.
4
Force TP Speed
10Mbps
100Mbps
(Only when Auto Negotiation (DIP 5) is disabled)
“OFF”: Forces 100Mbps on Ethernet port.
“ON”: Forces 10Mbps on Ethernet port.
5
Auto Negotiation
Disable
Enable
“OFF”: Enables “Auto Negotiation” function; the speed and
duplex states for each port link segment are automatically
configured using the highest performance interoperation
mode.
“ON”: Disables “Auto Negotiation” function; the speed and
duplex states depend on the DIP 3 & 4 configuration.
After changing the DIP switch setting, you will need to power off and
then power on the IMC-21A, or use a pointed object to hold the reset
button down for five seconds to activate the new setting.