6 Functional Description of the Ethernet Modules
6-10
6.2.4 Technical data
General features
Weight: around 150 g without buffer battery
around 170 g with buffer battery
Dimensions: 155 x 28 x 128 mm (H x W x D)
Static characteristics
Power consumption: Depends in the active state on the propor-
tion of transmitted packets:
1.4 W ... 3.1 W
Protective circuitry: Short-circuit protection circuit with current
delimiter
Medium: Coax. cable, 50 ohms, type RG58U
Max. segment length: 185 m
Max. number of nodes per segment: 30
Battery: Lithium battery, 3.6 V, > 950 mAh
Low battery signaling:
≤ 2.4 V
RAM and real-time clock buffering time
for PM 802F:
for PM 803F:
≥ 1.5 years
≤ 0 hours
Dynamic characteristics
Transmission rate: 10 Mbit/s
Data retention through battery buffering is only provided by the CPU
board PM 802F.
Use the Ethernet module EI 811F in order to achieve battery buffering
for the CPU board PM 803F.