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The GE IS200VCMIH1BCD, also cataloged as the IS200VCMI VME Bus Master Control Board, operates as a dedicated hardware component for central communication routing and backplane synchronization within General Electric Mark VI Speedtronic platforms. The module manages data distribution between the internal VME backplane and the external IONet network while executing Software Implemented Fault Tolerance (SIFT) protocol voting logic.

Hardware Specifications

Parameter Specification
Model IS200VCMIH1BCD
Brand GE General Electric
Origin USA
Weight 0.5 kg
Dimensions 266 x 191 x 63 mm
Operating Temp -40 to +85 deg C
Power Consumption 24 VDC nominal input (converts to 5 VDC for VME bus)
Board Function VME Bus Master / IONet Communication Interface
Protocol Support SIFT (Software Implemented Fault Tolerance)
Relative Humidity 5% to 95% RH (non-condensing)
Bus Interface Standard VME backplane bus master
System Platform Mark VI Speedtronic Control System

Deterministic Network Integration and Backplane Processing

The IS200VCMIH1BCD establishes centralized VME bus mastership to regulate timing and data traffic priority across the backplane without throughput bottlenecks. Optimized backplane bus communication velocity allows trip signals and control commands to be transmitted directly to I/O modules with zero frame jitter. Onboard firmware flash compatibility ensures synchronized scan execution and SIFT data masking across redundant controller configurations connected to IONet ports.

Frequently Asked Questions

Q: How does the IS200VCMIH1BCD handle power distribution across the VME backplane?

A: The card accepts a 24 VDC primary power supply input and uses internal regulation circuitry to convert this voltage into the 5 VDC logic supply required for VME backplane operation.

Q: What VME rack slot position is required for the IS200VCMIH1BCD card to manage bus arbitration?

A: The card must be installed into the designated master controller slot (Slot 1) of the VME rack to assume primary bus mastership and manage backplane address assignments.

Q: Can the IS200VCMIH1BCD module be removed or inserted while the VME backplane is energized?

A: No. Hot-swapping is not supported on this board; power to the VME rack rack must be fully isolated before removal or installation to avoid electrical damage to the backplane pin array.

Field Installation Guidelines

Align the IS200VCMIH1BCD card with the slot guide rails in Slot 1 of the 6U VME rack and slide it in until the backplane connectors engage. Press the top and bottom ejector handles firmly to seat the card completely, then tighten the retaining screws to ensure chassis ground continuity. Verify that all external IONet communication cables are secured to their designated RJ45/transceiver ports before applying 24 VDC power to the rack assembly.

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