Lenze EPM−T9XX Modular system - Manual (Page 393)

Parameterising 1xcounter/16xdigital input module
Input data / output data
12
Parameter setting via system bus (CAN) / CANopen
12.6
12.6.2
L
12.6−3 EDSPM−TXXX−9.0−11/2009
The inputs E.0 and E.1 are used as counter inputs and digital inputs.
The counter starting value is located in the first Rx PDO in the bytes 0 to 3 (Data
In). If a starting value is loaded, the counter counts upwards or downwards,
starting with this value.
The counting range lies between 0 and +4.294.967.295. As soon as the upper limit
(when counting upwards) has been reached, the count value jumps to the lower
count limit. The moment the lower count limit (when counting downwards) has
been reached, the count value jumps to the upper count limit.
The counter is controlled via byte 4 (control). It is assigned as follows:
Byte Assignment
4 Control byte Bit 0 1 = Start counter (software gate is open) 1)
Bit 1 1 = Stop counter (software gate is closed) 1)
Bit 2 1 = Counter is loaded with starting value /
comparison value
Bit 3 1 = Count value is deleted
Bits 4 ... 7 reserved
1) If start bit and stop bit = HIGH, "stop" is active. If both bits are LOW, the state of the bit that has been set last, is
active.
Via byte 5 the reference frequency for the modes 3 (frequency measurement) and
4 (period measurement) can be set. It is assigned as follows:
Byte Assignment
5 Reference frequency 00
h
16 MHz
01
h
8 MHz
02
h
4 MHz
03
h
1 MHz
04
h
100 kHz
05
h
10 kHz
06
h
1 kHz
07
h
100 Hz
08
h...
FF
h
not permissible
The current count value is located in the first Tx PDO in the bytes 0 to 3 (Data Out)
and can be read out there. Bytes 4 and 5 contain the control signals (E.0 ... E.15).
Input data
Output data