Lenze EPM−T9XX Modular system - Manual (Page 324)

Parameterising 2/4xcounter module
Input data / output data
12
Parameter setting via system bus (CAN) / CANopen
12.4
12.4.2
L
12.4−4 EDSPM−TXXX−9.0−11/2009
12.4.2 Input data / output data
epm−t106
Fig. 12.4−2 Data input / output of 2/4xcounter
For data input / output, 10 bytes are available which are transmitted via two PDOs
to the counter (Rx PDO) or output by the counter (Tx PDO).
Counter starting values or comparison values are included in the 1. Rx PDO in the
bytes 0 to 7 (Data In).
Due to a level change in byte 9 (Control), the values are written into a counter
register. Each bit in byte 9 is assigned to a specific counter register word.
The current count values are included in the 1. Tx PDO in the bytes 0 to 7 (Data Out)
and can be read out there.
The behaviour of the counter when the master module restarts (e.g. after changing
the parameter setting) can be controlled via byte 8 (status). The following
combinations are possible:
Bit 0 Bit 1
1 0 Counter reading remanent on restart
0 1
Counter reading cleared on restart (Lenze setting)
1 1
A read access to byte 9 of the output data allows setting checks at any time.
)
Note!
Count values get lost when the mains supply is switched off/on;
they are not stored!
Input data
Control byte
Output data
Status byte