Operating Instructions
IS1 PROFIBUS 3.00 E
- Technical alterations reserved -
72
PROFIBUS DP interface for IS1+
Operation mode ´counter´
Count mode:
Incremental / decremental with overflow / underflow
Count event:
Positive / Negative edge selectable.
Signal in case of error:
freeze last value (Initial value 0)
Alarming:
Status and channel diagnosis
Reset:
Reset counter register to ´0´
Start/Stop:
in ´Stop´ mode input pulses are ignored (not counted)
all DIM with counter
(9470/3x in comp. mode)
DIOM 9470/3x (IS1+)
count range
count event
Counter 16 Bit
UINT16
0
– 65535
Increment on edge
-
Up/Down Counter 16 Bit
Increment / Decrement depending
on rotation direction
-
Up/Down Counter 32 Bit
UINT32
0
– 4.294.967.295
Counting and rotation direction detection:
For counting and frequency measurement with direction detection two DI Inputs
are used as a functional pair. The phase shift of the two signals is measured.
The mechanical positioning of the two sensors must be chosen
to ensure the overlapping of associated pulses.
Signal allocation in cyclic Input data in operation mode
Up/Down Counter or Frequency with direction:
Input data
Usage
first DI bit of a input pair
DI digital value of first input
second DI bit of a input pair
Rotation direction
0 = Right / forward (Pulse on first input comes first)
1 = Left / backward (Pulse on second input comes first)
Operation mode
Application
Up/Down Counter
Up- or down counting of incoming
pulses depending on direction
Frequency with
direction
Rotation frequency and direction
detection for rotating machines
