Counter mode
The CX7000 Embedded PC can be configured as an up/down counter that enables the counting of a pulse. The embedded PC is suitable for fast counting tasks with a cut-off frequency of up to 100 kHz, whereby the CX7000 can be operated in 1-counter mode.
The CX7000 supports three operation modes in counter mode:
- Up/down counter
- Up counter
- Down counter
In addition, output 1 can be switched depending on the counter value. Output 2 can be switched from the PLC. This allows fast control signals for field devices to be used and switched.
The operation modes are set in TwinCAT via CoE objects.
Up/down counter
In the up/down counter operation mode, the pulse to be counted is detected by digital input 1. The counting direction is specified by digital input 2.
If there is a high level at input 1 and at the same time at input 2, the counter counts upwards. If there is a high level at input 1 and a low level at input 2, the counter counts downwards.
Up counter
In this operation mode, the signal is detected at digital input 1.
Down counter
In this operation mode, the signal is detected at digital input 1.
Technical data | CX7000 |
|---|---|
Number of counters | 1 x up/down counter, 1 x up or down counter |
Nominal voltage | 24 V DC (-15 %/+20 %) |
Specification | EN 61131-2, type 3 |
Signal voltage "0" | -3…+5 V |
Signal voltage "1" | 11…30 V |
Cut-off frequency | Up/down counter: 20 kHz1), counting in one direction only: 100 kHz |
Counter depth | 32-bit |
Max. output current | 24 V/0.5 A (short-circuit proof) |
Special features | Set counter, switch outputs, reset counter |
Connection cross-section | e*: 0.08…1.5 mm², |
Connection cross section AWG | e*: AWG 28…16, |
Strip length | 8 … 9 mm |
1) The up/down counter can also count up to 100 kHz, only with a direction reversal the counting frequency must be <= 20 kHz, otherwise pulses will be lost.
*e: single-wire, solid wire; f: stranded wire; a: with ferrule