www.supportme.net

5-16 Input/ Output MN1942

5.4.3 Ethernet connectors
Ethernetc onnections are made using the identical RJ45 Ethernet receptac les.
Location E1& E2
Pin Name Description
1TX+ Transmit+
2TX- Transmit-
3RX+ Receive+
4 - (NC)
5 - (NC)
6RX- Receive-
7 - (NC)
8Shield Shieldc onnection
Toconnect the MicroFlex e100to other EPL devices, ordinary shielded C AT5Et hernet cables
areus ed. Cables may be up to 100m (328 ft) long. Two varieties of CAT5cable are available;
‘straight’ or ‘crossed’. Straight cables have the TX pins of the connector atoneend of the cable
wiredto the TX pins ofthe RJ45 c onnector at the other end of the cable. Crossover c ables have
theTX pins of the c onnector at one end of the cable wired tothe RX pins ofthe RJ45connec tor
atthe other end of the c able.
Provided thenetw ork consists of only Baldor EPLc ontrollers anddriv es (andany hub), straight
orcros sed cables may be used. This isbec ause many Ethernet devices, includinghubs andall
Baldor EPL products, incorporate Auto-MDIX switching tec hnology which automatically
compensatesfor t he wiring of the straight cable. However, if other manufacturer’s EPL nodes are
includedin the network , crossover cables should be us ed as recommended by the ETHERN ET
Powerlink Standardization Group (EPSG).
TheMicroFlex e100 Ethernet interface is galvanic ally isolated from the rest of the MicroFlex e100
circuitry by magnetic isolation modules incorpor ated in each of the Ethernet connectors. This
providesprotec tionup to 1.5kV. The connector/cable sc reen is connected directly to the chassis
earth of the MicroFlex e100. Terminationc omponents are incorporated in each of the Ethernet
connectors, so no further termination is required.
TheE PL network supports the 100Base-TX (100Mbit/s) system only, so attemptingto connect
slower 10Base-T (10Mbit/s) nodes will cause a network error.
1
8