Beckhoff EL1502, Документация

Страница: 124 / 167

Commissioning
EL1502, EL1512 124 Version: 3.5
Operating mode selection – Setting in the CoE directory
Single-channel up/down counter, gated counter (operating mode 1-3)
1. Selection of the predefined PDO assignment "1Ch.+/-Counter"
2. Selection in index 0x8020:05 (see red marking in figure below). Three selection options are available
in the Set Value Dialog :
◦ "Enable UD counter" – single-channel up/down counter (operating mode 1)
If a high signal level is encountered at the up/down input of the terminal (terminal point 1), the
counter counts up in the event of positive edges at the clock input (terminal point 5), with a low
signal level it counts down.
◦ "Enable pos. gate" – single-channel gated counter closes in the case of a high level (operating
mode 2)
The counter is inhibited if a high level is encountered at the gate input of the terminal (terminal
point 1).
The counting direction is set by index 0x8020:04 (0: up, 1: down).
The clock input (terminal point 5) indicates the individual pulses.
◦ "Enable neg. gate" – single-channel gated counter closes in the case of a low level (operating
mode 3)
The counter is inhibited if a low level is encountered at the gate input of the terminal (terminal point
1).
The counting direction is set by index 0x8020:04 (0: up, 1: down).
The clock input (terminal point 5) indicates the individual pulses.
Two-channel up/down counter (operating mode 4)
1. Selection of the predefined PDO assignment "2Ch. Counter"
The terminal points 1 or 5 serve as clock input for 32 bit counter 1 or 2.
2. Selection in the indices 0x8000:04 for channel 1 and 0x8010:04 for channel 2 (see blue marking in fig-
ure below). Two selection options are available per channel in the Set Value Dialog :
◦ 0: up counter
◦ 1: down counter