Ethernet Modules EI 801F

Features  

… IEEE802.3 Ethernet standard  

… Provides 10Base2 compliant communication  

… 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 10Base2 (Cheapernet)  for thin coax cable installations.

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  Batt. Low   Off Sufficient buffer battery voltage.   

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

Front Panel Connections   Coax connector  

Technical Data  Rated voltage 3.3 V / 5 V, ±3%, from CPU board  Power consumption max. 

2.8 W  Thin Ethernet 10Base2  

RAM and real-time-clock buffering time  

PM 802F PM 803F  

New battery inserted ≥ 1,5 years without buffering  

After “Low” warning ≥ 10 days  

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

Weight approx. 0.150 kg (without battery)