Digital Output Modules | GE Fanuc IC610MDL180A
The VMIVME-2540-200000 (also identified as VMIVME-2540-200) is a 16-channel Intelligent Counter/Controller (ICC) board manufactured by General Electric (formerly VMIC) for VMEbus control architectures. Powered by an onboard 15 MHz Motorola 68HC000 processor, this VME slave board performs complex pulse counting, frequency measurement, period/pulse-width analysis, and quadrature position decoding offloaded entirely from the host CPU.
Functional Architecture and Signal Handling
The board provides 16 independent input/output channels with clock, gate, and discrete output capability. Signal interfaces comply with RS-422 differential standards and can be wired for single-ended TTL inputs. Common-mode voltage protection extends up to ±25 V with a differential mode limit of ±5 V (restricted by internal 120 Ω termination resistors).
Processing Capabilities and Performance
An onboard 5 MHz system timebase delivers a timing accuracy within ±0.005%. The module supports high-speed event counting up to 2.5 MHz (across 16-bit word or 32-bit long modes), pulse train and square wave generation (0.0076 Hz to 2.5 MHz), and quadrature encoder position measurement up to 1 MHz. Floating-point calculations conform to the ANSI/IEEE Standard 754-1985.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | VMIVME-2540-200000 (VMIVME-2540-200) |
| Brand | GE Fanuc / VMIC |
| Product Type | Intelligent Counter/Controller Modules |
| Form Factor | Single-slot VMEbus Board (160 mm x 233.4 mm) |
| Onboard Processor | 15 MHz 68HC000 CPU |
| Available Channels | 16 Channels (Option -200) |
| System Time Base | 5 MHz (±0.005% stability) |
| Event Counting Frequency | Up to 2.5 MHz |
| Frequency Measurement Range | 1.16 x 10^-3 Hz to 2.5 MHz |
| Signal Interface Standard | RS-422 Differential (TTL compatible) |
| Input Voltage Limits | Common-mode: ±25 V; Differential: ±5 V |
| VMEbus Memory Window | 64 Kbyte VMEbus slave memory window (A32/A24/D32/D16/D8) |
| Interrupt Generation | Dual interrupter asserting IRQ1 through IRQ7 (0.0076 to 1,000 Hz) |
| Power Requirements | +5 VDC (±5% / -2.5%), 4.25 A typical, 5.0 A max |
| Weight | 0.5 kg (1.1 lbs) |
| Shipping Dimensions | 17.8 cm x 2.5 cm x 27.9 cm |
| Operating Temperature | 0 to 65 deg C |
| Storage Temperature | -40 to 85 deg C |
| Operating Humidity | 5% to 95% RH (non-condensing) |
Installation and Wiring Guidelines
Interfacing with field signals requires twisted-pair insulated copper conductors (24 AWG recommended) to preserve RS-422 signal integrity up to a maximum distance of 4,000 feet. Ensure differential signal lines do not float within 100 mV of each other to prevent unwanted data state transitions. The board connects to standard VMEbus P1 and P2 backplane slots and draws its 5 VDC operating supply directly from the backplane.
Frequently Asked Questions
Q: How does the ordering suffix "-200000" (or "-200") define the hardware configuration? A: In the VMIVME-2540 ordering matrix, the "2" in the first digit position designates a 16-channel configuration.
Q: Can single-ended TTL signals be wired directly into the module's inputs? A: Yes, single-ended TTL inputs are supported by connecting the differential negative input line to the onboard VTTL reference voltage.
Q: Does the board require host computer processing power during high-speed pulse measurement? A: No, the onboard 15 MHz 68HC000 processor handles counter processing and math independently, storing results in a shared VMEbus memory window for host retrieval.
Digital Output Modules | GE Fanuc IC610MDL180A
Digital Output Modules | GE Fanuc IC610MDL180A
The VMIVME-2540-200000 (also identified as VMIVME-2540-200) is a 16-channel Intelligent Counter/Controller (ICC) board manufactured by General Electric (formerly VMIC) for VMEbus control architectures. Powered by an onboard 15 MHz Motorola 68HC000 processor, this VME slave board performs complex pulse counting, frequency measurement, period/pulse-width analysis, and quadrature position decoding offloaded entirely from the host CPU.
Functional Architecture and Signal Handling
The board provides 16 independent input/output channels with clock, gate, and discrete output capability. Signal interfaces comply with RS-422 differential standards and can be wired for single-ended TTL inputs. Common-mode voltage protection extends up to ±25 V with a differential mode limit of ±5 V (restricted by internal 120 Ω termination resistors).
Processing Capabilities and Performance
An onboard 5 MHz system timebase delivers a timing accuracy within ±0.005%. The module supports high-speed event counting up to 2.5 MHz (across 16-bit word or 32-bit long modes), pulse train and square wave generation (0.0076 Hz to 2.5 MHz), and quadrature encoder position measurement up to 1 MHz. Floating-point calculations conform to the ANSI/IEEE Standard 754-1985.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | VMIVME-2540-200000 (VMIVME-2540-200) |
| Brand | GE Fanuc / VMIC |
| Product Type | Intelligent Counter/Controller Modules |
| Form Factor | Single-slot VMEbus Board (160 mm x 233.4 mm) |
| Onboard Processor | 15 MHz 68HC000 CPU |
| Available Channels | 16 Channels (Option -200) |
| System Time Base | 5 MHz (±0.005% stability) |
| Event Counting Frequency | Up to 2.5 MHz |
| Frequency Measurement Range | 1.16 x 10^-3 Hz to 2.5 MHz |
| Signal Interface Standard | RS-422 Differential (TTL compatible) |
| Input Voltage Limits | Common-mode: ±25 V; Differential: ±5 V |
| VMEbus Memory Window | 64 Kbyte VMEbus slave memory window (A32/A24/D32/D16/D8) |
| Interrupt Generation | Dual interrupter asserting IRQ1 through IRQ7 (0.0076 to 1,000 Hz) |
| Power Requirements | +5 VDC (±5% / -2.5%), 4.25 A typical, 5.0 A max |
| Weight | 0.5 kg (1.1 lbs) |
| Shipping Dimensions | 17.8 cm x 2.5 cm x 27.9 cm |
| Operating Temperature | 0 to 65 deg C |
| Storage Temperature | -40 to 85 deg C |
| Operating Humidity | 5% to 95% RH (non-condensing) |
Installation and Wiring Guidelines
Interfacing with field signals requires twisted-pair insulated copper conductors (24 AWG recommended) to preserve RS-422 signal integrity up to a maximum distance of 4,000 feet. Ensure differential signal lines do not float within 100 mV of each other to prevent unwanted data state transitions. The board connects to standard VMEbus P1 and P2 backplane slots and draws its 5 VDC operating supply directly from the backplane.
Frequently Asked Questions
Q: How does the ordering suffix "-200000" (or "-200") define the hardware configuration? A: In the VMIVME-2540 ordering matrix, the "2" in the first digit position designates a 16-channel configuration.
Q: Can single-ended TTL signals be wired directly into the module's inputs? A: Yes, single-ended TTL inputs are supported by connecting the differential negative input line to the onboard VTTL reference voltage.
Q: Does the board require host computer processing power during high-speed pulse measurement? A: No, the onboard 15 MHz 68HC000 processor handles counter processing and math independently, storing results in a shared VMEbus memory window for host retrieval.
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