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Product Features
Using high speed counters, high speed signals from encoder ans sensors can be counted.
Because FX PLC has built-in high performance high speed counters, high speed control is possible with a simple program. A high speed counter block with hardware comparator is also available.
High speed counter block/adapter
| Model (Number of channels) | Type | Highest response frequency | Hardware comparison output function | 2-phase counter edge count function | Applicable FX PLC | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FX 3S | FX 3G | FX 3U | FX 3GC | FX 3UC | ||||||||||
| FX2N-1HC (1ch)  | 1-phase 1-count | Max. 50 kHz | ○ | - | × | × | ○ Max. 8 units | × | *2*3 ○ Max. 8 units | |||||
| 1-phase 2-count | Max. 50 kHz | |||||||||||||
| 2-phase 2-count | 1 edge count: Max. 50 kHz 2 edge count: Max. 25 kHz 4 edge count: Max. 12.5 kHz | ○ | ||||||||||||
| FX3U-2HC (2ch)  | 1-phase 1-count | Max. 200 kHz | ○ | - | × | × | ○ Max. 8 units | × | *2 ○ Max. 4 units | |||||
| 1-phase 2-count | Max. 200 kHz | |||||||||||||
| 2-phase 2-count | 1 edge count: Max. 200 kHz 2 edge count: Max. 100 kHz 4 edge count: Max. 50 kHz | ○ | ||||||||||||
| FX2NC-1HC (1ch)  | 1-phase 1-count | Max. 50 kHz | ○ | - | × | × | × | × | *3 ○ Max. 8 units | |||||
| 1-phase 2-count | Max. 50 kHz | |||||||||||||
| 2-phase 2-count | 1 edge count: Max. 50 kHz 2 edge count: Max. 25 kHz 4 edge count: Max. 12.5 kHz | ○ | ||||||||||||
| FX3U-4HSX-ADP (4ch)  | 1-phase 1-count | Max. 200 kHz | × | ○ | × | × | *1 ○ Max. 2 units | × | × | |||||
| 1-phase 2-count | Max. 200 kHz | |||||||||||||
| 2-phase 2-count | 1 edge count: Max. 100 kHz 4 edge count: Max. 100 kHz | |||||||||||||
*1: When used together with analog or communication adapters, function expansion board is required.
*2: When connecting to FX3UC, FX2NC-CNV-IF or FX3UC-1PS-5V is required.
*3: FX3UC-32MT-LT(-2): 7 units. FX3UC-**MT/D，FX3UC-**MT/DSS，FX3UC-16MR/D(S)-T: 8 units.
Built-in high speed counter function (high speed input adapter function)
FX3S Series PLC
| Type | Counter No. Highest response frequency* | Max. response frequency when high speed processing instruction is used* | Supported high speed processing instructions | High speed counter move | 2 phase counter multi- count function | FX3U-4HSX-ADP max. response frequency (FX3U only) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| When high speed comparison SET/RESET is used | When high speed band comparison HSZ is used | High speed comparison SET | High speed comparison RESET | High speed band comparison | Counter interrupt | High speed table comparison | |||||
| 1- phase 1- count | C235, C236, C241 Max. 2pts： Max. 60 kHz | overall frequency 60 kHz | ○ | ○ | ○ | × | × | × | - | × | |
| C237 to C240, C242 to C245 Max. 4pts： Max. 10 kHz | |||||||||||
| 1- phase 2- count | C246 Max. 1pt： Max. 60 kHz | ||||||||||
| C247, C248, C248(OP) C249, C250 Max. 2pts： Max. 10 kHz | |||||||||||
| 2- phase 2- count | C251 Max. 1pt： Max. 30 kHz | × | |||||||||
| C252, C253, C253(OP) C254, C255 Max. 2pts： Max. 5 kHz | |||||||||||
*: Regarding high speed counter reponse frequency, the overall frequency is limited. For details, please refer to the programming manual.
FX3G, FX3GC Series PLC
| Type | Counter No. Highest response frequency* | Max. response frequency when high speed processing instruction is used* | Supported high speed processing instructions | High speed counter move | 2 phase counter multi- count function | FX3U-4HSX-ADP max. response frequency (FX3U only) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| When high speed comparison SET/RESET is used | When high speed band comparison HSZ is used | High speed comparison SET | High speed comparison RESET | High speed band comparison | Counter interrupt | High speed table comparison | |||||
| 1- phase 1- count | C235, C236, C238, C239, C241 Max. 4pts： Max. 60 kHz | overall frequency 60 kHz | ○ | ○ | ○ | × | × | × | - | × | |
| C237, C240, C242 to C245 Max. 2pts： Max. 10 kHz | |||||||||||
| 1- phase 2- count | C246, C248(OP) Max. 2pts： Max. 60 kHz | ||||||||||
| C247 to C250 Max. 2pts： Max. 10 kHz | |||||||||||
| 2- phase 2- count | C251, C253(OP) Max. 2pts： Max. 30 kHz | × | |||||||||
| C252 to C255, C254（OP） Max. 2pts： Max. 5 kHz | |||||||||||
*: Regarding high speed counter reponse frequency, the overall frequency is limited. For details, please refer to the programming manual.
FX3U, FX3UC Series PLC
| Type | Counter No. Highest response frequency* | Max. response frequency when high speed processing instruction is used* | Supported high speed processing instructions | High speed counter move | 2 phase counter multi- count function | FX3U-4HSX-ADP max. response frequency (FX3U only) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| When high speed comparison SET/RESET is used | When high speed band comparison HSZ is used | High speed comparison SET | High speed comparison RESET | High speed band comparison | Counter interrupt | High speed table comparison | ||||||
| 1- phase 1- count | C235 to C240 Max. 6pts： Max. 100 kHz | 40 kHz | 40- (Number of times of use of instruction) | ○ | ○ | ○ | ○ | ○ | ○ | - | 200kHz | |
| C244(OP), C245(OP) Max. 2pts： Max. 10 kHz | 10 kHz | 200 kHz | ||||||||||
| C241 to C245 Max. 3pts： Max. 40 kHz | 40 kHz | - | ||||||||||
| 1- phase 2- count | C246, C248(OP) Max. 2pts： Max. 100 kHz | 40 kHz | 200 kHz | |||||||||
| C247 to C250 Max. 2pts： Max. 40 kHz | 40 kHz | - | ||||||||||
| 2- phase 2- count | C251, C253 Max. 2pts： Max. 50 kHz (1 edge count, 4 edge count) | 1 edge count | 40 kHz | ○ | 100 kHz | |||||||
| 4 edge count | 10 kHz | (40- Number of times of use of instruction)÷4 | ||||||||||
| C252, C253(OP), C254, C255 Max. 2pts： Max. 40 kHz | 1 edge count | 40 kHz | 40- (Number of times of use of instruction) | - | ||||||||
| 4 edge count | 10 kHz | (40- Number of times of use of instruction)÷4 | ||||||||||
*: Regarding high speed counter reponse frequency, the overall frequency is limited. For details, please refer to the programming manual.
Variety of functions
Built-in high speed counter numbers and allocation
Maximum frequency that the PLC can process
High speed comparison results can be obtained by a simple program and no calculation delay