Ethernet Module EI 813F

Features 

… IEEE802.3 Ethernet standard 

… provides 10BaseT compliant communication (10MBit) 

… 32-bit data bus 

… Transmission rate 10 MBit/s 

… Direct memory access to main memory, < 4% CPU overhead for operation 

… Optional battery for redundant battery backup of main memory

Description 

These communication modules provide Ethernet communications to the system bus compliant with IEEE802.3 standard. 

Communications module, compliant with 10BaseT shielded，Twisted Pair (STP, cable category 3, 4 or 5 advanced)

LED Displays 

State 

Off No supply voltage, module is isolated 

Green Power supply on, module identified and ready to operate as configured. 

Orange Power supply on, module identified and either: 

 — normal transitory state after module startup 

 — configuration mode of Boot Loader 

Orange flashing Power supply on, module identified; module not connected to proper bus structure. Red Power supply on and either: 

 — module not yet identified (normal for short time during module startup) 

 — error occurred during module test Battery (PM803F)  Off AC 800F is active, EI 813F not active 

=>buffering from power supply module 

AC 800F is off (no watchdog of the batteries voltage) =>buffering from battery. 

Orange During battery recovery or start-up phase 

Red Warning: battery low, no battery inserted, insufficient electrical contact etc. 

Green battery inserted and data protection provided. 

Battery (PM802F) 

Off Sufficient buffer battery voltage 

Orange Buffer battery not found or low (insufficient voltage).

Front Panel Connections 

RJ-45 female connector (shielded). There are two integrated LED’s indicating the current communication status. The LEDs 

are not labeled but can be identified by their color. The upper yellow LED indicates the link state; the lower green LED indicates active communication. 

LED 10BaseT link 

off No active link. No communication possible. static yellow Active link. Communication possible. 

LED 10BaseT active 

off No communication flashing green Active communication

Technical Data

Rated voltage 3.3 V / 5 V, ±3%, from CPU board 

Power consumption max. 1.2 W 

STP 10BaseT cable category 3, 4 or 5 advanced 

RAM and real-time-clock buffering time 

PM 803F PM 802F 

New battery inserted ≥ 10 days ≥ 1,5 years 

After “Low” warning ≥ 5 hours ≥ 10 days 

Battery 3.6 V lithium battery, 950 mAh (not in the delivery) 

Weight approx. 0.150 kg (without battery)