Softing Data Flow commModule MBP, Hardware Manual

Page: 10 / 36

commModule MBP - Hardware Manual
10
© Softing Industrial Automation GmbH
4
Electrical specifications
4.1 Protocol select
This pin is scanned during start-up.
Fieldbus Protocol PROT_SEL_P27 description
Fieldbus Foundation FF High
(internal pullup) Leave open
The commModule MBP is operating in
Foundation Fieldbus (FF) mode.
Profibus PA Low connect to GND
The commModule MBP is operating in Profibus
PA mode.
4.2 Operating conditions
Unless otherwise noted, all specifications apply over the specified operating temperature range.
4.3 Port input and output
The communication module has the following port input and port output specification at Vcc = 3.2V± 4%.
Parameter Symbol Min Max Unit Test Conditions
DI: input low voltage V
IL
Vcc x 0.2 V
DI: input high voltage V
IH
Vcc x 0.8 V
DO: output low voltage VOL 0.5 V IOL = 1mA
DO: output high voltage V
OH
Vcc – 0.5 V I
OH
= -1mA
Analog Input
The commModule MBP incorporates a 12bit-A/D converter with a reference voltage of 3.0V
Power Output:
The power budget to supply a connected system from fieldbus is limited.
It is dependent on the rated current from fieldbus, which is adjustable in software
from I
N
= 10mA to 26mA.
Available output power:
P
omax
= approx. 90mW on 6V2_OUT, with I
PO_6V2
= I
N
– 10mA
or:
P
omax
= approx. 70mW on 3V_OUT, with I
PO_3V_OUT
= (I
N
– 10mA) / 0.7
When both power outputs are used, the available power budget is between 70 and 90mW. The slew rate
is controlled. The rise time is 1.43ms. The output current is not limited on the commModule MBP.