SMAR DFI302, User Manual, Page: 61 / 218

Section 6
6.1
TECHNICAL SPECIFICATIONS
DFI302 Specifications
AMBIENT CONDITIONS
Operating 0-60 °C, 20-90% RH non-condensing.
Storage
-20.80 °C, 20-90% RH non-condensing.
Exception: DF51 module
-20~25 °C, 20-90%
(To achieve ten years of battery life, without excessive battery
discharge).
DF51 Specifications
DF51
Type 32-bit RISC.
Sustained Performance 50 MIPS
Memory for Code 2MB, 32-bit Flash Memory (Upgradeable firmware).
Memory for Data 2MB, 32-bit NVRAM (Data and configuration retention).
Fieldbus Interface
Numbers of Ports 4, independent with DMA
Physical Layer Standard ISA-S50.02-1992
Baud Rate 31.25 Kbps (H1)
MAU Type Passive (no bus powered)
Intrinsic Safety NOT Compliant
Isolation 500 Vac (each channel)
Operation Voltage/Current +5V ± 5% / 0.95A (typical).
Connector Ethernet RJ-45.
Connector EIA-232 RJ-12.
Ethernet Cable Specifications
To assembly a new Ethernet cable, you have to follow the specifications of the twisted cable pair,
according to the part number DF54 or DF55.
DF54- Straight cable. To be used in network communication between DFI302 and
Switch/HUB.
DF55- Cross cable. To be used in a point-to-point communication between PC and DFI302.
PS: Colours are merely a suggestion. You must have to use the correct pairs (color XXX and
white/color XXX);