BusWorks
®
900EN-S005 Ethernet Switch User’s Manual Ethernet I/O
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Acromag, Inc. Tel:248-624-1541 Fax:248-624-9234 Email:
http://www.acromag.com
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This device is a DIN-rail mount, five-port, industrial Ethernet switch. It is
provided as an accessory for use with Acromag 9xxEN Ethernet I/O modules
and may be used to increase effective network bandwidth and help to ensure
determinism for industrial control applications. The 900EN-S005 has been
designed for wide-ambient operation and is hardened for harsh
environments, with protection from RFI, EMI, ESD, EFT, and surges. It also
emits low radiation per strict CE requirements. Its plug-in terminal blocks
and DIN-Rail mount make mounting, removal, and replacement easy. Port-
to-port and port-to-power isolation enhances safety and increases noise
immunity. It is CE, UL, and cUL listed, with Class 1, Division 2, Groups A, B,
C, and D approvals, making it suitable for use in the presence of explosive
gases. Units are DC-powered, reverse polarity protected, and include
redundant supply support.
The ProfiBus model prefix “900” denotes the Series 900. The “EN” suffix
denotes Ethernet. The four digit suffix of this model number represents the
following options, respectively: “S” = Switch; “00” = Default; “5” = 5 Ports.
Connector:
Five shielded RJ-45 sockets, 8-pin, 10BaseT/100BaseTX.
Wiring:
Ports are wired MDI-X and include automatic MDI-X/MDI crossover.
Data Rate:
Auto-negotiated, 10Mbps or 100Mbps.
Duplex:
Auto-negotiated, Full or Half Duplex.
Compliance:
IEEE 802.3, 802.3u, 802.3x.
Port Status Indicators:
Three LED’s per port – red, yellow, and green.
Two indication modes combine speed, link status, activity indication,
and duplex indication. The LED indication mode is programmed via
DIP switch S2-4, or via bit 1 of EEPROM register 11.
Memory Bandwidth:
1.4Gbps.
Maximum Message Length/Frame Size:
1536 bytes (default), or select
1522 bytes with VLAN and 1518 bytes without VLAN. Also supports
huge packets (1916 bytes).
Illegal Frame Detection:
Frames less than 64 bytes and more than
maximum (see above) are discarded.
Flow Control:
IEEE 802.3x flow control on both transmit an receive is
enabled (default) and may be optionally disabled.
Half-Duplex Back Pressure (Non IEEE 802.3 standard):
Uses carrier
sense deference during heavy traffic to unburden resources. Enabled
by default and may be optionally disabled.
Half-Duplex Backoff:
Binary exponential per IEEE 802.3 (less aggressive
default). Optional more aggressive backoff may be enabled.
Address Learning:
Automatic, storage of up to 1K (1024) MAC addresses.
Address Aging:
Automatic, enabled by default (5 minutes), can be
optionally disabled.
Address Migration:
Automatic.
Frame Retry w/Collision:
Will drop frame after 16 collisions (default
operation), or may be optionally disabled for continuous retry.
Late Collision Detection:
Transmit packet is dropped if collision occurs
after 512 bit times of transmission (may optionally be disabled). Late
collisions are usually indicative of illegal cable length.
Register Memory:
512 bytes, Atmel AT24C02 or compatible EEPROM.
See EEPROM Register Map for definition.
SPECIFICATIONS
Model Number
900EN-S005
Ethernet Interface
