18 (48)
4.1.5
RESET (Reset Input)
Signal Name
Pin Type
Pin
Description
RESET
I
3
Reset
Used to reset the module.
The Anybus CompactCom does not feature any internal reset regulation. To establish a reliable
interface, the host application is solely responsible for resetting the Anybus CompactCom when
the supply voltage is out of the specified range.
Power Up
Power
/RESET
0V
3.3V
Power
On
Power
Stable
t
B
t
A
V
IL
V
IH
t
t
Fig. 5
Powerup time limits are given in the table below:
Symbol
Min.
Max.
Definition
t
A
-
-
Time until the power supply is stable after power-on; the duration depends
on the power supply design of the host application and is thus beyond the
scope of this document.
t
B
1 ms
-
Safety margin.
Restart
The reset pulse duration must be at least 10 µs in order for the Anybus CompactCom to properly
recognize a reset.
RESET
t
C
V
IL
V
IH
t
Fig. 6
Symbol
Min.
Max.
Definition
t
C
10 µs
-
Reset pulse width.
Anybus
®
CompactCom
™
B40 Modbus Serial User Manual
SCM-1202-130 1.1 en-US