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FX Series Programmable Controllers Devices in Detail 4
4-22
4.11 High Speed Counters
Device Mnemonic: C
Purpose: High speed event driven delays
Alias: Counter (s)
C
High speed counter (s)
Phase counters
Available forms: A driven coil sets internal PLC contacts (NO and NC contacts available).
There are various types of high speed counter available but the quantity
and function vary from PLC to PLC. Please check the following sections for
device availability;
FX
1S and FX1N - see page 4-24
FX
2N and FX2NC - see page 4-25
The following sections refer to counter types;
1 phase counters (user start and reset) - see page 4-29
1 phase counters (assigned start and reset) - see page 4-30
2 phase bi-directional counters - see page 4-31
A/B phase counters - see page 4-32
Devices numbered in: Decimal, i.e C235 to C255
Further uses: None
Example device usage:For examples on each of the available forms please see the relevant
sections.
Basic high speed counter operation:
• For information on basic high speed counters please see page 4-23.