ACLD-9188
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- Six 16‑bit programmable counters/timers using two 8254 chips (expandable to 12 counters with four chips).
- Flexible counter configuration: each counter can operate independently or in cascaded mode for 32‑bit timing.
- Selectable clock sources: internal 10 MHz oscillator divided to 2 MHz, 1 MHz, or 100 kHz; external clock input; or cascaded counter output.
- Gate control flexibility: each counter can be gated by external signals, internal cascaded outputs, or default enabled.
- Dual interrupt system: two independent interrupt sources selectable from internal or external events, assignable to IRQ3–15.
- Digital I/O capability: 16 TTL‑compatible digital inputs and 8 TTL‑compatible digital outputs.
- Synchronized frequency measurement: up to four channels can be measured simultaneously using internal gate synchronization.
- Compact half‑size ISA form factor for AT‑bus systems.
- Standard 37‑pin D‑type female connector for all counter, gate, clock, and digital I/O signals.
- Low power consumption: +5 V @ 210 mA maximum.
- Software support: C/C++ libraries and drivers for DOS, Windows 3.1, Windows 95, and Windows NT.
- Applications: event counting, frequency generation, pulse width and frequency measurement, watchdog timing, and industrial automation control.
- Flexible counter configuration: each counter can operate independently or in cascaded mode for 32‑bit timing.
- Selectable clock sources: internal 10 MHz oscillator divided to 2 MHz, 1 MHz, or 100 kHz; external clock input; or cascaded counter output.
- Gate control flexibility: each counter can be gated by external signals, internal cascaded outputs, or default enabled.
- Dual interrupt system: two independent interrupt sources selectable from internal or external events, assignable to IRQ3–15.
- Digital I/O capability: 16 TTL‑compatible digital inputs and 8 TTL‑compatible digital outputs.
- Synchronized frequency measurement: up to four channels can be measured simultaneously using internal gate synchronization.
- Compact half‑size ISA form factor for AT‑bus systems.
- Standard 37‑pin D‑type female connector for all counter, gate, clock, and digital I/O signals.
- Low power consumption: +5 V @ 210 mA maximum.
- Software support: C/C++ libraries and drivers for DOS, Windows 3.1, Windows 95, and Windows NT.
- Applications: event counting, frequency generation, pulse width and frequency measurement, watchdog timing, and industrial automation control.
Comprehensive Product Summary – ADLINK ACL‑8454/6 ISA Counter/Timer and Digital I/O Card
### 1. Product Overview
Product Name: ACL‑8454/6
Article Number: ACL‑8454/6
Series: NuDAQ ISA Multifunction Counter/Timer and Digital I/O Series
Model Type: ISA 6×Timer/Counter 16/8 DIO Card with 2×8254
Manufacturer: ADLINK Technology Inc.
Manufacturer Website: [www.adlink.com.tw](http://www.adlink.com.tw)
Contact: service@adlink.com.tw | Tel: +886‑2‑82265877 | Fax: +886‑2‑82265717
Address: 9F, No.166, Jian Yi Road, Chungho City, Taipei 235, Taiwan, R.O.C.
The ADLINK ACL‑8454/6 is a multifunction ISA‑bus add‑on card designed for IBM‑AT compatible PCs. It integrates six programmable 16‑bit counters/timers and 24 digital I/O channels (16 inputs, 8 outputs). The board is based on two Intel/NEC 8254 programmable interval timer chips and is expandable to four 8254 devices (12 counters total) in the ACL‑8454/12 variant. It is part of ADLINK’s NuDAQ family of industrial data acquisition and control products.
### 2. Key Features
- Six 16‑bit programmable counters/timers using two 8254 chips (expandable to 12 counters with four chips).
- Flexible counter configuration: each counter can operate independently or in cascaded mode for 32‑bit timing.
- Selectable clock sources: internal 10 MHz oscillator divided to 2 MHz, 1 MHz, or 100 kHz; external clock input; or cascaded counter output.
- Gate control flexibility: each counter can be gated by external signals, internal cascaded outputs, or default enabled.
- Dual interrupt system: two independent interrupt sources selectable from internal or external events, assignable to IRQ3–15.
- Digital I/O capability: 16 TTL‑compatible digital inputs and 8 TTL‑compatible digital outputs.
- Synchronized frequency measurement: up to four channels can be measured simultaneously using internal gate synchronization.
- Compact half‑size ISA form factor for AT‑bus systems.
- Standard 37‑pin D‑type female connector for all counter, gate, clock, and digital I/O signals.
- Low power consumption: +5 V @ 210 mA maximum.
- Software support: C/C++ libraries and drivers for DOS, Windows 3.1, Windows 95, and Windows NT.
- Applications: event counting, frequency generation, pulse width and frequency measurement, watchdog timing, and industrial automation control.
### 3. Technical Specifications
Programmable Counter/Timer Section
- Devices: 2 × 8254 (default), expandable to 4 × 8254
- Counter Resolution: 16‑bit down counters
- Clock Sources: internal (10 MHz oscillator divided to 2 MHz, 1 MHz, or 100 kHz), external input, or cascaded from another counter
- Gate Control: default enabled, external gate, or internal cascaded gate
- Maximum Clock Frequency: 10 MHz (depending on 8254 version)
- Cascaded Counter Capability: two 16‑bit counters can form a 32‑bit timer
Digital I/O (DIO)
- Input Channels: 16 TTL‑compatible inputs (shared with external gate/clock lines)
- Output Channels: 8 TTL‑compatible outputs
- Signal Levels: TTL/DTL compatible
Interrupt System
- Dual Interrupt Levels:
- Lower IRQ selectable from IRQ 3, 5, 6, 7, 9
- Higher IRQ selectable from IRQ 10, 11, 12, 15
- Interrupt Sources: internal counter outputs (/COUT6, COUT12) or external interrupt (ECLK10)
Electrical & Environmental
- Power Requirement: +5 V DC @ 210 mA max
- Operating Temperature: 0 °C – 60 °C
- Storage Temperature: −20 °C – 80 °C
- Humidity: 5 – 95 % RH, non‑condensing
Physical Characteristics
- Dimensions: 163 mm (L) × 108 mm (W)
- Form Factor: Half‑size ISA card
- Connectors: One 37‑pin D‑type female connector (CN1)
### 4. Functionality
The ACL‑8454/6 functions as a general‑purpose counter/timer and digital I/O interface for PC‑based control and measurement systems. Each 8254 chip provides three independent 16‑bit counters, programmable for six operating modes:
1. Interrupt on terminal count
2. Programmable one‑shot
3. Rate generator
4. Square‑wave generator
5. Software‑triggered strobe
6. Hardware‑triggered strobe
Operation Modes and Use Cases:
- Timer/Delay Generator: produce precise time delays or periodic pulses.
- Event Counter: count external pulses or occurrences.
- Frequency Generator: generate square‑wave outputs from 0.000233 Hz up to 250 kHz.
- Pulse Width Measurement: measure high‑level pulse duration using external gate input.
- Frequency Measurement: measure input signal frequency using synchronized gate control.
- Watchdog Timer: monitor system operation and trigger interrupts on timeout.
Compatibility:
- Fully compatible with IBM AT ISA bus (I/O address range 0x200–0x3FF).
- Works with ADLINK NuDAQ software libraries and drivers for DOS and Windows operating systems.
- Supports connection to ADLINK daughterboards (ACLD‑9137, ACLD‑9188, DIN‑37D) for signal conditioning or extended I/O.
### 5. Components & Accessories
Included Items:
- ACL‑8454/6 Counter/Timer and DIO Card
- ADLINK Software CD (drivers, libraries, and utilities)
- User’s Manual
Optional Add‑ons:
- Additional 8254 chips (U3, U4) for expansion to 12 counters (ACL‑8454/12 configuration)
- Daughterboards:
- ACLD‑9137: 37‑pin terminal board
- ACLD‑9188: 37‑pin screw terminal board
- DIN‑37D: 37‑pin DIN‑rail mountable terminal board
Connectors:
- CN1 (37‑pin D‑type female): provides all counter/timer I/O, digital I/O, and interrupt lines.
- Pins include ECLK 1–10 (external clocks), ExtG 1–10 (external gates), COUT 1–10 (counter outputs), DO 0–7 (digital outputs), DI 0–15 (digital inputs), +5 V, and GND.
### 6. Installation & Setup
System Requirements:
- IBM AT or compatible PC with available ISA slot
- DOS or Windows 3.1/95/NT operating system
- +5 V DC power from system bus
Installation Steps:
1. Unpack the card on a grounded anti‑static mat using an ESD wrist strap.
2. Verify no physical damage; ensure all ICs are properly seated.
3. Set the base I/O address using DIP switch S1 (default = 0x240).
4. Configure clock source jumpers (CK1–CK10) and gate control jumpers (G1–G4) as required.
5. Select interrupt levels using jumpers JP1 (high IRQ) and JP2 (low IRQ).
6. Insert the card into an ISA slot and secure it.
7. Install software drivers and libraries from the ADLINK CD.
Default Configuration:
- Base Address: 0x240
- Clock1: 2 MHz (from 10 MHz ÷ 5)
- Clock2: 100 kHz (from 10 MHz ÷ 100)
- Installed Chips: U1, U2 (6 counters active)
- Interrupt #1: IRQ 15 (from /COUT6)
- Interrupt #2: not connected (JP2 open)
- External Interrupt Source: ECLK10
Mounting:
- Standard ISA slot insertion; half‑size board fits most AT‑compatible chassis.
- External connections via 37‑pin D‑type connector to terminal board or custom cable.
### 7. Performance & Capabilities
Timing and Frequency Performance:
- Internal Oscillator: 10 MHz crystal
- Internal Clock Options: 10 MHz, 2 MHz, 1 MHz, 100 kHz
- Maximum Counter Input Frequency: 10 MHz (depending on 8254 type)
- Minimum Output Frequency (cascaded): 0.000233 Hz
- Cascaded Counter Output Range: 250 kHz – 0.000233 Hz
- Synchronized Frequency Measurement: up to 4 channels simultaneously
Digital I/O Performance:
- TTL‑level compatibility ensures direct interfacing with logic devices.
- Input and output response times determined by ISA bus access speed.
Interrupt Handling:
- Dual interrupt capability allows simultaneous watchdog and external event handling.
- Interrupt latency dependent on host system and OS driver configuration.
Limitations:
- ISA bus bandwidth limits high‑speed data acquisition.
- Shared digital input lines with external clock/gate may reduce available DI channels when those functions are active.
- Requires manual jumper configuration for clock and gate routing.
### 8. Standards & Compliance
- Bus Interface: ISA (Industry Standard Architecture)
- Signal Levels: TTL/DTL compatible
- Operating Environment: Industrial PC standard (0 °C – 60 °C)
- Regulatory Compliance: Designed to meet CE and FCC Class A (typical for ADLINK ISA cards; compliance dependent on system integration).
- Component Standards: Utilizes industry‑standard Intel/NEC 8254 programmable interval timer chips.
- Software Compatibility: ADLINK NuDAQ driver architecture; supports DOS, Windows 3.1, Windows 95, and Windows NT environments.
### 9. Additional Information
Warranty:
- One‑year limited warranty from date of purchase.
- Covers defects in materials and workmanship under normal use.
- Excludes damage from misuse, modification, or operation beyond specifications.
- Return shipping prepaid; proof of purchase required for warranty service.
Technical Support:
- Email: nudaq@adlink.com.tw (NuDAQ technical support)
- Phone: +886‑2‑82265877
- Fax: +886‑2‑82265717
- Support Divisions:
- NuDAQ (data acquisition)
- NuDAM (distributed modules)
- NuIPC (industrial PCs)
- NuPRO (CPU boards)
- Software (drivers and utilities)
Maintenance:
- Periodically inspect connectors and jumpers for secure fit.
- Avoid exposure to excessive humidity or vibration.
- Handle only with ESD protection.
Software & Updates:
- C/C++ libraries and DLLs provided for multiple OS platforms.
- Functions include initialization, counter read/write, digital I/O access, and interrupt handling.
- Example programs (DEMO1–DEMO5) demonstrate frequency generation, pulse width measurement, and event counting.
- Updates and utilities (e.g., 8454Util.exe for Windows NT driver registry) available on ADLINK’s support site.
Programming Interface Summary:
- Initialization: `W_8454_Initial(base_address)`
- Counter Control: `W_8454_Write_Counter()`, `W_8454_Read_Counter()`, `W_8454_Stop_Counter()`
- Digital I/O: `W_8454_DO()`, `W_8454_DI()` and bit‑level access functions
- Interrupt Control: `W_8454_INT_Enable()`, `W_8454_INT_Disable()`
- Mode Macros: predefined macros for 8254 modes (square wave, rate generator, one‑shot, etc.)
Expansion & Customization:
- Users may install additional 8254 chips (U3, U4) to expand to 12 counters.
- Jumper configuration allows user‑defined cascaded counter arrangements.
- Compatible with external daughterboards for signal conditioning or extended connectivity.
### Summary
The ADLINK ACL‑8454/6 is a robust, flexible ISA‑bus counter/timer and digital I/O card engineered for industrial and laboratory automation. With six 16‑bit programmable counters (expandable to twelve), dual interrupt capability, and versatile clock/gate configurations, it supports a wide range of timing, counting, and control applications. Its TTL‑compatible I/O, synchronized frequency measurement, and comprehensive software library make it suitable for precision measurement, process control, and system monitoring tasks in legacy PC‑based environments. The card’s modular design, jumper‑selectable options, and ADLINK’s long‑term support ensure adaptability and reliability in demanding industrial systems.
### 1. Product Overview
Product Name: ACL‑8454/6
Article Number: ACL‑8454/6
Series: NuDAQ ISA Multifunction Counter/Timer and Digital I/O Series
Model Type: ISA 6×Timer/Counter 16/8 DIO Card with 2×8254
Manufacturer: ADLINK Technology Inc.
Manufacturer Website: [www.adlink.com.tw](http://www.adlink.com.tw)
Contact: service@adlink.com.tw | Tel: +886‑2‑82265877 | Fax: +886‑2‑82265717
Address: 9F, No.166, Jian Yi Road, Chungho City, Taipei 235, Taiwan, R.O.C.
The ADLINK ACL‑8454/6 is a multifunction ISA‑bus add‑on card designed for IBM‑AT compatible PCs. It integrates six programmable 16‑bit counters/timers and 24 digital I/O channels (16 inputs, 8 outputs). The board is based on two Intel/NEC 8254 programmable interval timer chips and is expandable to four 8254 devices (12 counters total) in the ACL‑8454/12 variant. It is part of ADLINK’s NuDAQ family of industrial data acquisition and control products.
### 2. Key Features
- Six 16‑bit programmable counters/timers using two 8254 chips (expandable to 12 counters with four chips).
- Flexible counter configuration: each counter can operate independently or in cascaded mode for 32‑bit timing.
- Selectable clock sources: internal 10 MHz oscillator divided to 2 MHz, 1 MHz, or 100 kHz; external clock input; or cascaded counter output.
- Gate control flexibility: each counter can be gated by external signals, internal cascaded outputs, or default enabled.
- Dual interrupt system: two independent interrupt sources selectable from internal or external events, assignable to IRQ3–15.
- Digital I/O capability: 16 TTL‑compatible digital inputs and 8 TTL‑compatible digital outputs.
- Synchronized frequency measurement: up to four channels can be measured simultaneously using internal gate synchronization.
- Compact half‑size ISA form factor for AT‑bus systems.
- Standard 37‑pin D‑type female connector for all counter, gate, clock, and digital I/O signals.
- Low power consumption: +5 V @ 210 mA maximum.
- Software support: C/C++ libraries and drivers for DOS, Windows 3.1, Windows 95, and Windows NT.
- Applications: event counting, frequency generation, pulse width and frequency measurement, watchdog timing, and industrial automation control.
### 3. Technical Specifications
Programmable Counter/Timer Section
- Devices: 2 × 8254 (default), expandable to 4 × 8254
- Counter Resolution: 16‑bit down counters
- Clock Sources: internal (10 MHz oscillator divided to 2 MHz, 1 MHz, or 100 kHz), external input, or cascaded from another counter
- Gate Control: default enabled, external gate, or internal cascaded gate
- Maximum Clock Frequency: 10 MHz (depending on 8254 version)
- Cascaded Counter Capability: two 16‑bit counters can form a 32‑bit timer
Digital I/O (DIO)
- Input Channels: 16 TTL‑compatible inputs (shared with external gate/clock lines)
- Output Channels: 8 TTL‑compatible outputs
- Signal Levels: TTL/DTL compatible
Interrupt System
- Dual Interrupt Levels:
- Lower IRQ selectable from IRQ 3, 5, 6, 7, 9
- Higher IRQ selectable from IRQ 10, 11, 12, 15
- Interrupt Sources: internal counter outputs (/COUT6, COUT12) or external interrupt (ECLK10)
Electrical & Environmental
- Power Requirement: +5 V DC @ 210 mA max
- Operating Temperature: 0 °C – 60 °C
- Storage Temperature: −20 °C – 80 °C
- Humidity: 5 – 95 % RH, non‑condensing
Physical Characteristics
- Dimensions: 163 mm (L) × 108 mm (W)
- Form Factor: Half‑size ISA card
- Connectors: One 37‑pin D‑type female connector (CN1)
### 4. Functionality
The ACL‑8454/6 functions as a general‑purpose counter/timer and digital I/O interface for PC‑based control and measurement systems. Each 8254 chip provides three independent 16‑bit counters, programmable for six operating modes:
1. Interrupt on terminal count
2. Programmable one‑shot
3. Rate generator
4. Square‑wave generator
5. Software‑triggered strobe
6. Hardware‑triggered strobe
Operation Modes and Use Cases:
- Timer/Delay Generator: produce precise time delays or periodic pulses.
- Event Counter: count external pulses or occurrences.
- Frequency Generator: generate square‑wave outputs from 0.000233 Hz up to 250 kHz.
- Pulse Width Measurement: measure high‑level pulse duration using external gate input.
- Frequency Measurement: measure input signal frequency using synchronized gate control.
- Watchdog Timer: monitor system operation and trigger interrupts on timeout.
Compatibility:
- Fully compatible with IBM AT ISA bus (I/O address range 0x200–0x3FF).
- Works with ADLINK NuDAQ software libraries and drivers for DOS and Windows operating systems.
- Supports connection to ADLINK daughterboards (ACLD‑9137, ACLD‑9188, DIN‑37D) for signal conditioning or extended I/O.
### 5. Components & Accessories
Included Items:
- ACL‑8454/6 Counter/Timer and DIO Card
- ADLINK Software CD (drivers, libraries, and utilities)
- User’s Manual
Optional Add‑ons:
- Additional 8254 chips (U3, U4) for expansion to 12 counters (ACL‑8454/12 configuration)
- Daughterboards:
- ACLD‑9137: 37‑pin terminal board
- ACLD‑9188: 37‑pin screw terminal board
- DIN‑37D: 37‑pin DIN‑rail mountable terminal board
Connectors:
- CN1 (37‑pin D‑type female): provides all counter/timer I/O, digital I/O, and interrupt lines.
- Pins include ECLK 1–10 (external clocks), ExtG 1–10 (external gates), COUT 1–10 (counter outputs), DO 0–7 (digital outputs), DI 0–15 (digital inputs), +5 V, and GND.
### 6. Installation & Setup
System Requirements:
- IBM AT or compatible PC with available ISA slot
- DOS or Windows 3.1/95/NT operating system
- +5 V DC power from system bus
Installation Steps:
1. Unpack the card on a grounded anti‑static mat using an ESD wrist strap.
2. Verify no physical damage; ensure all ICs are properly seated.
3. Set the base I/O address using DIP switch S1 (default = 0x240).
4. Configure clock source jumpers (CK1–CK10) and gate control jumpers (G1–G4) as required.
5. Select interrupt levels using jumpers JP1 (high IRQ) and JP2 (low IRQ).
6. Insert the card into an ISA slot and secure it.
7. Install software drivers and libraries from the ADLINK CD.
Default Configuration:
- Base Address: 0x240
- Clock1: 2 MHz (from 10 MHz ÷ 5)
- Clock2: 100 kHz (from 10 MHz ÷ 100)
- Installed Chips: U1, U2 (6 counters active)
- Interrupt #1: IRQ 15 (from /COUT6)
- Interrupt #2: not connected (JP2 open)
- External Interrupt Source: ECLK10
Mounting:
- Standard ISA slot insertion; half‑size board fits most AT‑compatible chassis.
- External connections via 37‑pin D‑type connector to terminal board or custom cable.
### 7. Performance & Capabilities
Timing and Frequency Performance:
- Internal Oscillator: 10 MHz crystal
- Internal Clock Options: 10 MHz, 2 MHz, 1 MHz, 100 kHz
- Maximum Counter Input Frequency: 10 MHz (depending on 8254 type)
- Minimum Output Frequency (cascaded): 0.000233 Hz
- Cascaded Counter Output Range: 250 kHz – 0.000233 Hz
- Synchronized Frequency Measurement: up to 4 channels simultaneously
Digital I/O Performance:
- TTL‑level compatibility ensures direct interfacing with logic devices.
- Input and output response times determined by ISA bus access speed.
Interrupt Handling:
- Dual interrupt capability allows simultaneous watchdog and external event handling.
- Interrupt latency dependent on host system and OS driver configuration.
Limitations:
- ISA bus bandwidth limits high‑speed data acquisition.
- Shared digital input lines with external clock/gate may reduce available DI channels when those functions are active.
- Requires manual jumper configuration for clock and gate routing.
### 8. Standards & Compliance
- Bus Interface: ISA (Industry Standard Architecture)
- Signal Levels: TTL/DTL compatible
- Operating Environment: Industrial PC standard (0 °C – 60 °C)
- Regulatory Compliance: Designed to meet CE and FCC Class A (typical for ADLINK ISA cards; compliance dependent on system integration).
- Component Standards: Utilizes industry‑standard Intel/NEC 8254 programmable interval timer chips.
- Software Compatibility: ADLINK NuDAQ driver architecture; supports DOS, Windows 3.1, Windows 95, and Windows NT environments.
### 9. Additional Information
Warranty:
- One‑year limited warranty from date of purchase.
- Covers defects in materials and workmanship under normal use.
- Excludes damage from misuse, modification, or operation beyond specifications.
- Return shipping prepaid; proof of purchase required for warranty service.
Technical Support:
- Email: nudaq@adlink.com.tw (NuDAQ technical support)
- Phone: +886‑2‑82265877
- Fax: +886‑2‑82265717
- Support Divisions:
- NuDAQ (data acquisition)
- NuDAM (distributed modules)
- NuIPC (industrial PCs)
- NuPRO (CPU boards)
- Software (drivers and utilities)
Maintenance:
- Periodically inspect connectors and jumpers for secure fit.
- Avoid exposure to excessive humidity or vibration.
- Handle only with ESD protection.
Software & Updates:
- C/C++ libraries and DLLs provided for multiple OS platforms.
- Functions include initialization, counter read/write, digital I/O access, and interrupt handling.
- Example programs (DEMO1–DEMO5) demonstrate frequency generation, pulse width measurement, and event counting.
- Updates and utilities (e.g., 8454Util.exe for Windows NT driver registry) available on ADLINK’s support site.
Programming Interface Summary:
- Initialization: `W_8454_Initial(base_address)`
- Counter Control: `W_8454_Write_Counter()`, `W_8454_Read_Counter()`, `W_8454_Stop_Counter()`
- Digital I/O: `W_8454_DO()`, `W_8454_DI()` and bit‑level access functions
- Interrupt Control: `W_8454_INT_Enable()`, `W_8454_INT_Disable()`
- Mode Macros: predefined macros for 8254 modes (square wave, rate generator, one‑shot, etc.)
Expansion & Customization:
- Users may install additional 8254 chips (U3, U4) to expand to 12 counters.
- Jumper configuration allows user‑defined cascaded counter arrangements.
- Compatible with external daughterboards for signal conditioning or extended connectivity.
### Summary
The ADLINK ACL‑8454/6 is a robust, flexible ISA‑bus counter/timer and digital I/O card engineered for industrial and laboratory automation. With six 16‑bit programmable counters (expandable to twelve), dual interrupt capability, and versatile clock/gate configurations, it supports a wide range of timing, counting, and control applications. Its TTL‑compatible I/O, synchronized frequency measurement, and comprehensive software library make it suitable for precision measurement, process control, and system monitoring tasks in legacy PC‑based environments. The card’s modular design, jumper‑selectable options, and ADLINK’s long‑term support ensure adaptability and reliability in demanding industrial systems.
-
A8454 Manual.PDF
Manual
- ACLD-9188 - Panel for mounting low pass filter etc.
- ACLD-9137-01 - Direct 37 small screw terminal
- DIN-37D-01 - 37pin D-type panel DIN rail w/o cable
